remove SabreDav 1.6.3

25 files changed, 0 insertions, 4353 deletions

diff --git a/3rdparty/Sabre/CalDAV/Backend/Abstract.php b/3rdparty/Sabre/CalDAV/Backend/Abstract.php
deleted file mode 100755
index 7aba1d69ffe..00000000000
--- a/3rdparty/Sabre/CalDAV/Backend/Abstract.php
+++ /dev/null
@@ -1,168 +0,0 @@
-<?php
-
-/**
- * Abstract Calendaring backend. Extend this class to create your own backends.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-abstract class Sabre_CalDAV_Backend_Abstract {
-
-    /**
-     * Returns a list of calendars for a principal.
-     *
-     * Every project is an array with the following keys:
-     *  * id, a unique id that will be used by other functions to modify the
-     *    calendar. This can be the same as the uri or a database key.
-     *  * uri, which the basename of the uri with which the calendar is
-     *    accessed.
-     *  * principaluri. The owner of the calendar. Almost always the same as
-     *    principalUri passed to this method.
-     *
-     * Furthermore it can contain webdav properties in clark notation. A very
-     * common one is '{DAV:}displayname'.
-     *
-     * @param string $principalUri
-     * @return array
-     */
-    abstract function getCalendarsForUser($principalUri);
-
-    /**
-     * Creates a new calendar for a principal.
-     *
-     * If the creation was a success, an id must be returned that can be used to reference
-     * this calendar in other methods, such as updateCalendar.
-     *
-     * @param string $principalUri
-     * @param string $calendarUri
-     * @param array $properties
-     * @return void
-     */
-    abstract function createCalendar($principalUri,$calendarUri,array $properties);
-
-    /**
-     * Updates properties for a calendar.
-     *
-     * The mutations array uses the propertyName in clark-notation as key,
-     * and the array value for the property value. In the case a property
-     * should be deleted, the property value will be null.
-     *
-     * This method must be atomic. If one property cannot be changed, the
-     * entire operation must fail.
-     *
-     * If the operation was successful, true can be returned.
-     * If the operation failed, false can be returned.
-     *
-     * Deletion of a non-existent property is always successful.
-     *
-     * Lastly, it is optional to return detailed information about any
-     * failures. In this case an array should be returned with the following
-     * structure:
-     *
-     * array(
-     *   403 => array(
-     *      '{DAV:}displayname' => null,
-     *   ),
-     *   424 => array(
-     *      '{DAV:}owner' => null,
-     *   )
-     * )
-     *
-     * In this example it was forbidden to update {DAV:}displayname.
-     * (403 Forbidden), which in turn also caused {DAV:}owner to fail
-     * (424 Failed Dependency) because the request needs to be atomic.
-     *
-     * @param string $calendarId
-     * @param array $mutations
-     * @return bool|array
-     */
-    public function updateCalendar($calendarId, array $mutations) {
-
-        return false;
-
-    }
-
-    /**
-     * Delete a calendar and all it's objects
-     *
-     * @param string $calendarId
-     * @return void
-     */
-    abstract function deleteCalendar($calendarId);
-
-    /**
-     * Returns all calendar objects within a calendar.
-     *
-     * Every item contains an array with the following keys:
-     *   * id - unique identifier which will be used for subsequent updates
-     *   * calendardata - The iCalendar-compatible calendar data
-     *   * uri - a unique key which will be used to construct the uri. This can be any arbitrary string.
-     *   * lastmodified - a timestamp of the last modification time
-     *   * etag - An arbitrary string, surrounded by double-quotes. (e.g.:
-     *   '  "abcdef"')
-     *   * calendarid - The calendarid as it was passed to this function.
-     *   * size - The size of the calendar objects, in bytes.
-     *
-     * Note that the etag is optional, but it's highly encouraged to return for
-     * speed reasons.
-     *
-     * The calendardata is also optional. If it's not returned
-     * 'getCalendarObject' will be called later, which *is* expected to return
-     * calendardata.
-     *
-     * If neither etag or size are specified, the calendardata will be
-     * used/fetched to determine these numbers. If both are specified the
-     * amount of times this is needed is reduced by a great degree.
-     *
-     * @param string $calendarId
-     * @return array
-     */
-    abstract function getCalendarObjects($calendarId);
-
-    /**
-     * Returns information from a single calendar object, based on it's object
-     * uri.
-     *
-     * The returned array must have the same keys as getCalendarObjects. The
-     * 'calendardata' object is required here though, while it's not required
-     * for getCalendarObjects.
-     *
-     * @param string $calendarId
-     * @param string $objectUri
-     * @return array
-     */
-    abstract function getCalendarObject($calendarId,$objectUri);
-
-    /**
-     * Creates a new calendar object.
-     *
-     * @param string $calendarId
-     * @param string $objectUri
-     * @param string $calendarData
-     * @return void
-     */
-    abstract function createCalendarObject($calendarId,$objectUri,$calendarData);
-
-    /**
-     * Updates an existing calendarobject, based on it's uri.
-     *
-     * @param string $calendarId
-     * @param string $objectUri
-     * @param string $calendarData
-     * @return void
-     */
-    abstract function updateCalendarObject($calendarId,$objectUri,$calendarData);
-
-    /**
-     * Deletes an existing calendar object.
-     *
-     * @param string $calendarId
-     * @param string $objectUri
-     * @return void
-     */
-    abstract function deleteCalendarObject($calendarId,$objectUri);
-
-}
diff --git a/3rdparty/Sabre/CalDAV/Backend/PDO.php b/3rdparty/Sabre/CalDAV/Backend/PDO.php
deleted file mode 100755
index ddacf940c74..00000000000
--- a/3rdparty/Sabre/CalDAV/Backend/PDO.php
+++ /dev/null
@@ -1,396 +0,0 @@
-<?php
-
-/**
- * PDO CalDAV backend
- *
- * This backend is used to store calendar-data in a PDO database, such as
- * sqlite or MySQL
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_Backend_PDO extends Sabre_CalDAV_Backend_Abstract {
-
-    /**
-     * pdo
-     *
-     * @var PDO
-     */
-    protected $pdo;
-
-    /**
-     * The table name that will be used for calendars
-     *
-     * @var string
-     */
-    protected $calendarTableName;
-
-    /**
-     * The table name that will be used for calendar objects
-     *
-     * @var string
-     */
-    protected $calendarObjectTableName;
-
-    /**
-     * List of CalDAV properties, and how they map to database fieldnames
-     *
-     * Add your own properties by simply adding on to this array
-     *
-     * @var array
-     */
-    public $propertyMap = array(
-        '{DAV:}displayname'                          => 'displayname',
-        '{urn:ietf:params:xml:ns:caldav}calendar-description' => 'description',
-        '{urn:ietf:params:xml:ns:caldav}calendar-timezone'    => 'timezone',
-        '{http://apple.com/ns/ical/}calendar-order'  => 'calendarorder',
-        '{http://apple.com/ns/ical/}calendar-color'  => 'calendarcolor',
-    );
-
-    /**
-     * Creates the backend
-     *
-     * @param PDO $pdo
-     * @param string $calendarTableName
-     * @param string $calendarObjectTableName
-     */
-    public function __construct(PDO $pdo, $calendarTableName = 'calendars', $calendarObjectTableName = 'calendarobjects') {
-
-        $this->pdo = $pdo;
-        $this->calendarTableName = $calendarTableName;
-        $this->calendarObjectTableName = $calendarObjectTableName;
-
-    }
-
-    /**
-     * Returns a list of calendars for a principal.
-     *
-     * Every project is an array with the following keys:
-     *  * id, a unique id that will be used by other functions to modify the
-     *    calendar. This can be the same as the uri or a database key.
-     *  * uri, which the basename of the uri with which the calendar is
-     *    accessed.
-     *  * principaluri. The owner of the calendar. Almost always the same as
-     *    principalUri passed to this method.
-     *
-     * Furthermore it can contain webdav properties in clark notation. A very
-     * common one is '{DAV:}displayname'.
-     *
-     * @param string $principalUri
-     * @return array
-     */
-    public function getCalendarsForUser($principalUri) {
-
-        $fields = array_values($this->propertyMap);
-        $fields[] = 'id';
-        $fields[] = 'uri';
-        $fields[] = 'ctag';
-        $fields[] = 'components';
-        $fields[] = 'principaluri';
-
-        // Making fields a comma-delimited list
-        $fields = implode(', ', $fields);
-        $stmt = $this->pdo->prepare("SELECT " . $fields . " FROM ".$this->calendarTableName." WHERE principaluri = ? ORDER BY calendarorder ASC");
-        $stmt->execute(array($principalUri));
-
-        $calendars = array();
-        while($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
-
-            $components = array();
-            if ($row['components']) {
-                $components = explode(',',$row['components']);
-            }
-
-            $calendar = array(
-                'id' => $row['id'],
-                'uri' => $row['uri'],
-                'principaluri' => $row['principaluri'],
-                '{' . Sabre_CalDAV_Plugin::NS_CALENDARSERVER . '}getctag' => $row['ctag']?$row['ctag']:'0',
-                '{' . Sabre_CalDAV_Plugin::NS_CALDAV . '}supported-calendar-component-set' => new Sabre_CalDAV_Property_SupportedCalendarComponentSet($components),
-            );
-
-
-            foreach($this->propertyMap as $xmlName=>$dbName) {
-                $calendar[$xmlName] = $row[$dbName];
-            }
-
-            $calendars[] = $calendar;
-
-        }
-
-        return $calendars;
-
-    }
-
-    /**
-     * Creates a new calendar for a principal.
-     *
-     * If the creation was a success, an id must be returned that can be used to reference
-     * this calendar in other methods, such as updateCalendar
-     *
-     * @param string $principalUri
-     * @param string $calendarUri
-     * @param array $properties
-     * @return string
-     */
-    public function createCalendar($principalUri, $calendarUri, array $properties) {
-
-        $fieldNames = array(
-            'principaluri',
-            'uri',
-            'ctag',
-        );
-        $values = array(
-            ':principaluri' => $principalUri,
-            ':uri'          => $calendarUri,
-            ':ctag'         => 1,
-        );
-
-        // Default value
-        $sccs = '{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set';
-        $fieldNames[] = 'components';
-        if (!isset($properties[$sccs])) {
-            $values[':components'] = 'VEVENT,VTODO';
-        } else {
-            if (!($properties[$sccs] instanceof Sabre_CalDAV_Property_SupportedCalendarComponentSet)) {
-                throw new Sabre_DAV_Exception('The ' . $sccs . ' property must be of type: Sabre_CalDAV_Property_SupportedCalendarComponentSet');
-            }
-            $values[':components'] = implode(',',$properties[$sccs]->getValue());
-        }
-
-        foreach($this->propertyMap as $xmlName=>$dbName) {
-            if (isset($properties[$xmlName])) {
-
-                $values[':' . $dbName] = $properties[$xmlName];
-                $fieldNames[] = $dbName;
-            }
-        }
-
-        $stmt = $this->pdo->prepare("INSERT INTO ".$this->calendarTableName." (".implode(', ', $fieldNames).") VALUES (".implode(', ',array_keys($values)).")");
-        $stmt->execute($values);
-
-        return $this->pdo->lastInsertId();
-
-    }
-
-    /**
-     * Updates properties for a calendar.
-     *
-     * The mutations array uses the propertyName in clark-notation as key,
-     * and the array value for the property value. In the case a property
-     * should be deleted, the property value will be null.
-     *
-     * This method must be atomic. If one property cannot be changed, the
-     * entire operation must fail.
-     *
-     * If the operation was successful, true can be returned.
-     * If the operation failed, false can be returned.
-     *
-     * Deletion of a non-existent property is always successful.
-     *
-     * Lastly, it is optional to return detailed information about any
-     * failures. In this case an array should be returned with the following
-     * structure:
-     *
-     * array(
-     *   403 => array(
-     *      '{DAV:}displayname' => null,
-     *   ),
-     *   424 => array(
-     *      '{DAV:}owner' => null,
-     *   )
-     * )
-     *
-     * In this example it was forbidden to update {DAV:}displayname.
-     * (403 Forbidden), which in turn also caused {DAV:}owner to fail
-     * (424 Failed Dependency) because the request needs to be atomic.
-     *
-     * @param string $calendarId
-     * @param array $mutations
-     * @return bool|array
-     */
-    public function updateCalendar($calendarId, array $mutations) {
-
-        $newValues = array();
-        $result = array(
-            200 => array(), // Ok
-            403 => array(), // Forbidden
-            424 => array(), // Failed Dependency
-        );
-
-        $hasError = false;
-
-        foreach($mutations as $propertyName=>$propertyValue) {
-
-            // We don't know about this property.
-            if (!isset($this->propertyMap[$propertyName])) {
-                $hasError = true;
-                $result[403][$propertyName] = null;
-                unset($mutations[$propertyName]);
-                continue;
-            }
-
-            $fieldName = $this->propertyMap[$propertyName];
-            $newValues[$fieldName] = $propertyValue;
-
-        }
-
-        // If there were any errors we need to fail the request
-        if ($hasError) {
-            // Properties has the remaining properties
-            foreach($mutations as $propertyName=>$propertyValue) {
-                $result[424][$propertyName] = null;
-            }
-
-            // Removing unused statuscodes for cleanliness
-            foreach($result as $status=>$properties) {
-                if (is_array($properties) && count($properties)===0) unset($result[$status]);
-            }
-
-            return $result;
-
-        }
-
-        // Success
-
-        // Now we're generating the sql query.
-        $valuesSql = array();
-        foreach($newValues as $fieldName=>$value) {
-            $valuesSql[] = $fieldName . ' = ?';
-        }
-        $valuesSql[] = 'ctag = ctag + 1';
-
-        $stmt = $this->pdo->prepare("UPDATE " . $this->calendarTableName . " SET " . implode(', ',$valuesSql) . " WHERE id = ?");
-        $newValues['id'] = $calendarId;
-        $stmt->execute(array_values($newValues));
-
-        return true;
-
-    }
-
-    /**
-     * Delete a calendar and all it's objects
-     *
-     * @param string $calendarId
-     * @return void
-     */
-    public function deleteCalendar($calendarId) {
-
-        $stmt = $this->pdo->prepare('DELETE FROM '.$this->calendarObjectTableName.' WHERE calendarid = ?');
-        $stmt->execute(array($calendarId));
-
-        $stmt = $this->pdo->prepare('DELETE FROM '.$this->calendarTableName.' WHERE id = ?');
-        $stmt->execute(array($calendarId));
-
-    }
-
-    /**
-     * Returns all calendar objects within a calendar.
-     *
-     * Every item contains an array with the following keys:
-     *   * id - unique identifier which will be used for subsequent updates
-     *   * calendardata - The iCalendar-compatible calendar data
-     *   * uri - a unique key which will be used to construct the uri. This can be any arbitrary string.
-     *   * lastmodified - a timestamp of the last modification time
-     *   * etag - An arbitrary string, surrounded by double-quotes. (e.g.:
-     *   '  "abcdef"')
-     *   * calendarid - The calendarid as it was passed to this function.
-     *   * size - The size of the calendar objects, in bytes.
-     *
-     * Note that the etag is optional, but it's highly encouraged to return for
-     * speed reasons.
-     *
-     * The calendardata is also optional. If it's not returned
-     * 'getCalendarObject' will be called later, which *is* expected to return
-     * calendardata.
-     *
-     * If neither etag or size are specified, the calendardata will be
-     * used/fetched to determine these numbers. If both are specified the
-     * amount of times this is needed is reduced by a great degree.
-     *
-     * @param string $calendarId
-     * @return array
-     */
-    public function getCalendarObjects($calendarId) {
-
-        $stmt = $this->pdo->prepare('SELECT * FROM '.$this->calendarObjectTableName.' WHERE calendarid = ?');
-        $stmt->execute(array($calendarId));
-        return $stmt->fetchAll();
-
-    }
-
-    /**
-     * Returns information from a single calendar object, based on it's object
-     * uri.
-     *
-     * The returned array must have the same keys as getCalendarObjects. The
-     * 'calendardata' object is required here though, while it's not required
-     * for getCalendarObjects.
-     *
-     * @param string $calendarId
-     * @param string $objectUri
-     * @return array
-     */
-    public function getCalendarObject($calendarId,$objectUri) {
-
-        $stmt = $this->pdo->prepare('SELECT * FROM '.$this->calendarObjectTableName.' WHERE calendarid = ? AND uri = ?');
-        $stmt->execute(array($calendarId, $objectUri));
-        return $stmt->fetch();
-
-    }
-
-    /**
-     * Creates a new calendar object.
-     *
-     * @param string $calendarId
-     * @param string $objectUri
-     * @param string $calendarData
-     * @return void
-     */
-    public function createCalendarObject($calendarId,$objectUri,$calendarData) {
-
-        $stmt = $this->pdo->prepare('INSERT INTO '.$this->calendarObjectTableName.' (calendarid, uri, calendardata, lastmodified) VALUES (?,?,?,?)');
-        $stmt->execute(array($calendarId,$objectUri,$calendarData,time()));
-        $stmt = $this->pdo->prepare('UPDATE '.$this->calendarTableName.' SET ctag = ctag + 1 WHERE id = ?');
-        $stmt->execute(array($calendarId));
-
-    }
-
-    /**
-     * Updates an existing calendarobject, based on it's uri.
-     *
-     * @param string $calendarId
-     * @param string $objectUri
-     * @param string $calendarData
-     * @return void
-     */
-    public function updateCalendarObject($calendarId,$objectUri,$calendarData) {
-
-        $stmt = $this->pdo->prepare('UPDATE '.$this->calendarObjectTableName.' SET calendardata = ?, lastmodified = ? WHERE calendarid = ? AND uri = ?');
-        $stmt->execute(array($calendarData,time(),$calendarId,$objectUri));
-        $stmt = $this->pdo->prepare('UPDATE '.$this->calendarTableName.' SET ctag = ctag + 1 WHERE id = ?');
-        $stmt->execute(array($calendarId));
-
-    }
-
-    /**
-     * Deletes an existing calendar object.
-     *
-     * @param string $calendarId
-     * @param string $objectUri
-     * @return void
-     */
-    public function deleteCalendarObject($calendarId,$objectUri) {
-
-        $stmt = $this->pdo->prepare('DELETE FROM '.$this->calendarObjectTableName.' WHERE calendarid = ? AND uri = ?');
-        $stmt->execute(array($calendarId,$objectUri));
-        $stmt = $this->pdo->prepare('UPDATE '. $this->calendarTableName .' SET ctag = ctag + 1 WHERE id = ?');
-        $stmt->execute(array($calendarId));
-
-    }
-
-
-}
diff --git a/3rdparty/Sabre/CalDAV/Calendar.php b/3rdparty/Sabre/CalDAV/Calendar.php
deleted file mode 100755
index 623df2dd1b8..00000000000
--- a/3rdparty/Sabre/CalDAV/Calendar.php
+++ /dev/null
@@ -1,343 +0,0 @@
-<?php
-
-/**
- * This object represents a CalDAV calendar.
- *
- * A calendar can contain multiple TODO and or Events. These are represented
- * as Sabre_CalDAV_CalendarObject objects.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_Calendar implements Sabre_CalDAV_ICalendar, Sabre_DAV_IProperties, Sabre_DAVACL_IACL {
-
-    /**
-     * This is an array with calendar information
-     *
-     * @var array
-     */
-    protected $calendarInfo;
-
-    /**
-     * CalDAV backend
-     *
-     * @var Sabre_CalDAV_Backend_Abstract
-     */
-    protected $caldavBackend;
-
-    /**
-     * Principal backend
-     *
-     * @var Sabre_DAVACL_IPrincipalBackend
-     */
-    protected $principalBackend;
-
-    /**
-     * Constructor
-     *
-     * @param Sabre_DAVACL_IPrincipalBackend $principalBackend
-     * @param Sabre_CalDAV_Backend_Abstract $caldavBackend
-     * @param array $calendarInfo
-     */
-    public function __construct(Sabre_DAVACL_IPrincipalBackend $principalBackend, Sabre_CalDAV_Backend_Abstract $caldavBackend, $calendarInfo) {
-
-        $this->caldavBackend = $caldavBackend;
-        $this->principalBackend = $principalBackend;
-        $this->calendarInfo = $calendarInfo;
-
-
-    }
-
-    /**
-     * Returns the name of the calendar
-     *
-     * @return string
-     */
-    public function getName() {
-
-        return $this->calendarInfo['uri'];
-
-    }
-
-    /**
-     * Updates properties such as the display name and description
-     *
-     * @param array $mutations
-     * @return array
-     */
-    public function updateProperties($mutations) {
-
-        return $this->caldavBackend->updateCalendar($this->calendarInfo['id'],$mutations);
-
-    }
-
-    /**
-     * Returns the list of properties
-     *
-     * @param array $requestedProperties
-     * @return array
-     */
-    public function getProperties($requestedProperties) {
-
-        $response = array();
-
-        foreach($requestedProperties as $prop) switch($prop) {
-
-            case '{urn:ietf:params:xml:ns:caldav}supported-calendar-data' :
-                $response[$prop] = new Sabre_CalDAV_Property_SupportedCalendarData();
-                break;
-            case '{urn:ietf:params:xml:ns:caldav}supported-collation-set' :
-                $response[$prop] =  new Sabre_CalDAV_Property_SupportedCollationSet();
-                break;
-            case '{DAV:}owner' :
-                $response[$prop] = new Sabre_DAVACL_Property_Principal(Sabre_DAVACL_Property_Principal::HREF,$this->calendarInfo['principaluri']);
-                break;
-            default :
-                if (isset($this->calendarInfo[$prop])) $response[$prop] = $this->calendarInfo[$prop];
-                break;
-
-        }
-        return $response;
-
-    }
-
-    /**
-     * Returns a calendar object
-     *
-     * The contained calendar objects are for example Events or Todo's.
-     *
-     * @param string $name
-     * @return Sabre_DAV_ICalendarObject
-     */
-    public function getChild($name) {
-
-        $obj = $this->caldavBackend->getCalendarObject($this->calendarInfo['id'],$name);
-        if (!$obj) throw new Sabre_DAV_Exception_NotFound('Calendar object not found');
-        return new Sabre_CalDAV_CalendarObject($this->caldavBackend,$this->calendarInfo,$obj);
-
-    }
-
-    /**
-     * Returns the full list of calendar objects
-     *
-     * @return array
-     */
-    public function getChildren() {
-
-        $objs = $this->caldavBackend->getCalendarObjects($this->calendarInfo['id']);
-        $children = array();
-        foreach($objs as $obj) {
-            $children[] = new Sabre_CalDAV_CalendarObject($this->caldavBackend,$this->calendarInfo,$obj);
-        }
-        return $children;
-
-    }
-
-    /**
-     * Checks if a child-node exists.
-     *
-     * @param string $name
-     * @return bool
-     */
-    public function childExists($name) {
-
-        $obj = $this->caldavBackend->getCalendarObject($this->calendarInfo['id'],$name);
-        if (!$obj)
-            return false;
-        else
-            return true;
-
-    }
-
-    /**
-     * Creates a new directory
-     *
-     * We actually block this, as subdirectories are not allowed in calendars.
-     *
-     * @param string $name
-     * @return void
-     */
-    public function createDirectory($name) {
-
-        throw new Sabre_DAV_Exception_MethodNotAllowed('Creating collections in calendar objects is not allowed');
-
-    }
-
-    /**
-     * Creates a new file
-     *
-     * The contents of the new file must be a valid ICalendar string.
-     *
-     * @param string $name
-     * @param resource $calendarData
-     * @return string|null
-     */
-    public function createFile($name,$calendarData = null) {
-
-        if (is_resource($calendarData)) {
-            $calendarData = stream_get_contents($calendarData);
-        }
-        return $this->caldavBackend->createCalendarObject($this->calendarInfo['id'],$name,$calendarData);
-
-    }
-
-    /**
-     * Deletes the calendar.
-     *
-     * @return void
-     */
-    public function delete() {
-
-        $this->caldavBackend->deleteCalendar($this->calendarInfo['id']);
-
-    }
-
-    /**
-     * Renames the calendar. Note that most calendars use the
-     * {DAV:}displayname to display a name to display a name.
-     *
-     * @param string $newName
-     * @return void
-     */
-    public function setName($newName) {
-
-        throw new Sabre_DAV_Exception_MethodNotAllowed('Renaming calendars is not yet supported');
-
-    }
-
-    /**
-     * Returns the last modification date as a unix timestamp.
-     *
-     * @return void
-     */
-    public function getLastModified() {
-
-        return null;
-
-    }
-
-    /**
-     * Returns the owner principal
-     *
-     * This must be a url to a principal, or null if there's no owner
-     *
-     * @return string|null
-     */
-    public function getOwner() {
-
-        return $this->calendarInfo['principaluri'];
-
-    }
-
-    /**
-     * Returns a group principal
-     *
-     * This must be a url to a principal, or null if there's no owner
-     *
-     * @return string|null
-     */
-    public function getGroup() {
-
-        return null;
-
-    }
-
-    /**
-     * Returns a list of ACE's for this node.
-     *
-     * Each ACE has the following properties:
-     *   * 'privilege', a string such as {DAV:}read or {DAV:}write. These are
-     *     currently the only supported privileges
-     *   * 'principal', a url to the principal who owns the node
-     *   * 'protected' (optional), indicating that this ACE is not allowed to
-     *      be updated.
-     *
-     * @return array
-     */
-    public function getACL() {
-
-        return array(
-            array(
-                'privilege' => '{DAV:}read',
-                'principal' => $this->calendarInfo['principaluri'],
-                'protected' => true,
-            ),
-            array(
-                'privilege' => '{DAV:}write',
-                'principal' => $this->calendarInfo['principaluri'],
-                'protected' => true,
-            ),
-            array(
-                'privilege' => '{DAV:}read',
-                'principal' => $this->calendarInfo['principaluri'] . '/calendar-proxy-write',
-                'protected' => true,
-            ),
-            array(
-                'privilege' => '{DAV:}write',
-                'principal' => $this->calendarInfo['principaluri'] . '/calendar-proxy-write',
-                'protected' => true,
-            ),
-            array(
-                'privilege' => '{DAV:}read',
-                'principal' => $this->calendarInfo['principaluri'] . '/calendar-proxy-read',
-                'protected' => true,
-            ),
-            array(
-                'privilege' => '{' . Sabre_CalDAV_Plugin::NS_CALDAV . '}read-free-busy',
-                'principal' => '{DAV:}authenticated',
-                'protected' => true,
-            ),
-
-        );
-
-    }
-
-    /**
-     * Updates the ACL
-     *
-     * This method will receive a list of new ACE's.
-     *
-     * @param array $acl
-     * @return void
-     */
-    public function setACL(array $acl) {
-
-        throw new Sabre_DAV_Exception_MethodNotAllowed('Changing ACL is not yet supported');
-
-    }
-
-    /**
-     * Returns the list of supported privileges for this node.
-     *
-     * The returned data structure is a list of nested privileges.
-     * See Sabre_DAVACL_Plugin::getDefaultSupportedPrivilegeSet for a simple
-     * standard structure.
-     *
-     * If null is returned from this method, the default privilege set is used,
-     * which is fine for most common usecases.
-     *
-     * @return array|null
-     */
-    public function getSupportedPrivilegeSet() {
-
-        $default = Sabre_DAVACL_Plugin::getDefaultSupportedPrivilegeSet();
-
-        // We need to inject 'read-free-busy' in the tree, aggregated under
-        // {DAV:}read.
-        foreach($default['aggregates'] as &$agg) {
-
-            if ($agg['privilege'] !== '{DAV:}read') continue;
-
-            $agg['aggregates'][] = array(
-                'privilege' => '{' . Sabre_CalDAV_Plugin::NS_CALDAV . '}read-free-busy',
-            );
-
-        }
-        return $default;
-
-    }
-
-}
diff --git a/3rdparty/Sabre/CalDAV/CalendarObject.php b/3rdparty/Sabre/CalDAV/CalendarObject.php
deleted file mode 100755
index 72f0a578d16..00000000000
--- a/3rdparty/Sabre/CalDAV/CalendarObject.php
+++ /dev/null
@@ -1,273 +0,0 @@
-<?php
-
-/**
- * The CalendarObject represents a single VEVENT or VTODO within a Calendar.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_CalendarObject extends Sabre_DAV_File implements Sabre_CalDAV_ICalendarObject, Sabre_DAVACL_IACL {
-
-    /**
-     * Sabre_CalDAV_Backend_Abstract
-     *
-     * @var array
-     */
-    protected $caldavBackend;
-
-    /**
-     * Array with information about this CalendarObject
-     *
-     * @var array
-     */
-    protected $objectData;
-
-    /**
-     * Array with information about the containing calendar
-     *
-     * @var array
-     */
-    protected $calendarInfo;
-
-    /**
-     * Constructor
-     *
-     * @param Sabre_CalDAV_Backend_Abstract $caldavBackend
-     * @param array $calendarInfo
-     * @param array $objectData
-     */
-    public function __construct(Sabre_CalDAV_Backend_Abstract $caldavBackend,array $calendarInfo,array $objectData) {
-
-        $this->caldavBackend = $caldavBackend;
-
-        if (!isset($objectData['calendarid'])) {
-            throw new InvalidArgumentException('The objectData argument must contain a \'calendarid\' property');
-        }
-        if (!isset($objectData['uri'])) {
-            throw new InvalidArgumentException('The objectData argument must contain an \'uri\' property');
-        }
-
-        $this->calendarInfo = $calendarInfo;
-        $this->objectData = $objectData;
-
-    }
-
-    /**
-     * Returns the uri for this object
-     *
-     * @return string
-     */
-    public function getName() {
-
-        return $this->objectData['uri'];
-
-    }
-
-    /**
-     * Returns the ICalendar-formatted object
-     *
-     * @return string
-     */
-    public function get() {
-
-        // Pre-populating the 'calendardata' is optional, if we don't have it
-        // already we fetch it from the backend.
-        if (!isset($this->objectData['calendardata'])) {
-            $this->objectData = $this->caldavBackend->getCalendarObject($this->objectData['calendarid'], $this->objectData['uri']);
-        }
-        return $this->objectData['calendardata'];
-
-    }
-
-    /**
-     * Updates the ICalendar-formatted object
-     *
-     * @param string $calendarData
-     * @return void
-     */
-    public function put($calendarData) {
-
-        if (is_resource($calendarData)) {
-            $calendarData = stream_get_contents($calendarData);
-        }
-        $etag = $this->caldavBackend->updateCalendarObject($this->calendarInfo['id'],$this->objectData['uri'],$calendarData);
-        $this->objectData['calendardata'] = $calendarData;
-        $this->objectData['etag'] = $etag;
-
-        return $etag;
-
-    }
-
-    /**
-     * Deletes the calendar object
-     *
-     * @return void
-     */
-    public function delete() {
-
-        $this->caldavBackend->deleteCalendarObject($this->calendarInfo['id'],$this->objectData['uri']);
-
-    }
-
-    /**
-     * Returns the mime content-type
-     *
-     * @return string
-     */
-    public function getContentType() {
-
-        return 'text/calendar';
-
-    }
-
-    /**
-     * Returns an ETag for this object.
-     *
-     * The ETag is an arbitrary string, but MUST be surrounded by double-quotes.
-     *
-     * @return string
-     */
-    public function getETag() {
-
-        if (isset($this->objectData['etag'])) {
-            return $this->objectData['etag'];
-        } else {
-            return '"' . md5($this->get()). '"';
-        }
-
-    }
-
-    /**
-     * Returns the last modification date as a unix timestamp
-     *
-     * @return time
-     */
-    public function getLastModified() {
-
-        return $this->objectData['lastmodified'];
-
-    }
-
-    /**
-     * Returns the size of this object in bytes
-     *
-     * @return int
-     */
-    public function getSize() {
-
-        if (array_key_exists('size',$this->objectData)) {
-            return $this->objectData['size'];
-        } else {
-            return strlen($this->get());
-        }
-
-    }
-
-    /**
-     * Returns the owner principal
-     *
-     * This must be a url to a principal, or null if there's no owner
-     *
-     * @return string|null
-     */
-    public function getOwner() {
-
-        return $this->calendarInfo['principaluri'];
-
-    }
-
-    /**
-     * Returns a group principal
-     *
-     * This must be a url to a principal, or null if there's no owner
-     *
-     * @return string|null
-     */
-    public function getGroup() {
-
-        return null;
-
-    }
-
-    /**
-     * Returns a list of ACE's for this node.
-     *
-     * Each ACE has the following properties:
-     *   * 'privilege', a string such as {DAV:}read or {DAV:}write. These are
-     *     currently the only supported privileges
-     *   * 'principal', a url to the principal who owns the node
-     *   * 'protected' (optional), indicating that this ACE is not allowed to
-     *      be updated.
-     *
-     * @return array
-     */
-    public function getACL() {
-
-        return array(
-            array(
-                'privilege' => '{DAV:}read',
-                'principal' => $this->calendarInfo['principaluri'],
-                'protected' => true,
-            ),
-            array(
-                'privilege' => '{DAV:}write',
-                'principal' => $this->calendarInfo['principaluri'],
-                'protected' => true,
-            ),
-            array(
-                'privilege' => '{DAV:}read',
-                'principal' => $this->calendarInfo['principaluri'] . '/calendar-proxy-write',
-                'protected' => true,
-            ),
-            array(
-                'privilege' => '{DAV:}write',
-                'principal' => $this->calendarInfo['principaluri'] . '/calendar-proxy-write',
-                'protected' => true,
-            ),
-            array(
-                'privilege' => '{DAV:}read',
-                'principal' => $this->calendarInfo['principaluri'] . '/calendar-proxy-read',
-                'protected' => true,
-            ),
-
-        );
-
-    }
-
-    /**
-     * Updates the ACL
-     *
-     * This method will receive a list of new ACE's.
-     *
-     * @param array $acl
-     * @return void
-     */
-    public function setACL(array $acl) {
-
-        throw new Sabre_DAV_Exception_MethodNotAllowed('Changing ACL is not yet supported');
-
-    }
-
-    /**
-     * Returns the list of supported privileges for this node.
-     *
-     * The returned data structure is a list of nested privileges.
-     * See Sabre_DAVACL_Plugin::getDefaultSupportedPrivilegeSet for a simple
-     * standard structure.
-     *
-     * If null is returned from this method, the default privilege set is used,
-     * which is fine for most common usecases.
-     *
-     * @return array|null
-     */
-    public function getSupportedPrivilegeSet() {
-
-        return null;
-
-    }
-
-}
-
diff --git a/3rdparty/Sabre/CalDAV/CalendarQueryParser.php b/3rdparty/Sabre/CalDAV/CalendarQueryParser.php
deleted file mode 100755
index bd0d343382f..00000000000
--- a/3rdparty/Sabre/CalDAV/CalendarQueryParser.php
+++ /dev/null
@@ -1,296 +0,0 @@
-<?php
-
-/**
- * Parses the calendar-query report request body.
- *
- * Whoever designed this format, and the CalDAV equivalent even more so,
- * has no feel for design.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/)
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_CalendarQueryParser {
-
-    /**
-     * List of requested properties the client wanted
-     *
-     * @var array
-     */
-    public $requestedProperties;
-
-    /**
-     * List of property/component filters.
-     *
-     * @var array
-     */
-    public $filters;
-
-    /**
-     * This property will contain null if CALDAV:expand was not specified, 
-     * otherwise it will contain an array with 2 elements (start, end). Each 
-     * contain a DateTime object.
-     *
-     * If expand is specified, recurring calendar objects are to be expanded 
-     * into their individual components, and only the components that fall 
-     * within the specified time-range are to be returned.
-     *
-     * For more details, see rfc4791, section 9.6.5.
-     * 
-     * @var null|array 
-     */
-    public $expand;
-
-    /**
-     * DOM Document
-     *
-     * @var DOMDocument
-     */
-    protected $dom;
-
-    /**
-     * DOM XPath object
-     *
-     * @var DOMXPath
-     */
-    protected $xpath;
-
-    /**
-     * Creates the parser
-     *
-     * @param DOMDocument $dom
-     */
-    public function __construct(DOMDocument $dom) {
-
-        $this->dom = $dom;
-
-        $this->xpath = new DOMXPath($dom);
-        $this->xpath->registerNameSpace('cal',Sabre_CalDAV_Plugin::NS_CALDAV);
-        $this->xpath->registerNameSpace('dav','urn:DAV');
-
-    }
-
-    /**
-     * Parses the request.
-     *
-     * @return void
-     */
-    public function parse() {
-
-        $filterNode = null;
-
-        $filter = $this->xpath->query('/cal:calendar-query/cal:filter');
-        if ($filter->length !== 1) {
-            throw new Sabre_DAV_Exception_BadRequest('Only one filter element is allowed');
-        }
-
-        $compFilters = $this->parseCompFilters($filter->item(0));
-        if (count($compFilters)!==1) {
-            throw new Sabre_DAV_Exception_BadRequest('There must be exactly 1 top-level comp-filter.');
-        }
-
-        $this->filters = $compFilters[0];
-        $this->requestedProperties = array_keys(Sabre_DAV_XMLUtil::parseProperties($this->dom->firstChild));
-
-        $expand = $this->xpath->query('/cal:calendar-query/dav:prop/cal:calendar-data/cal:expand');
-        if ($expand->length>0) {
-            $this->expand = $this->parseExpand($expand->item(0));
-        }
-             
-
-    }
-
-    /**
-     * Parses all the 'comp-filter' elements from a node
-     *
-     * @param DOMElement $parentNode
-     * @return array
-     */
-    protected function parseCompFilters(DOMElement $parentNode) {
-
-        $compFilterNodes = $this->xpath->query('cal:comp-filter', $parentNode);
-        $result = array();
-
-        for($ii=0; $ii < $compFilterNodes->length; $ii++) {
-
-            $compFilterNode = $compFilterNodes->item($ii);
-
-            $compFilter = array();
-            $compFilter['name'] = $compFilterNode->getAttribute('name');
-            $compFilter['is-not-defined'] = $this->xpath->query('cal:is-not-defined', $compFilterNode)->length>0;
-            $compFilter['comp-filters'] = $this->parseCompFilters($compFilterNode);
-            $compFilter['prop-filters'] = $this->parsePropFilters($compFilterNode);
-            $compFilter['time-range'] = $this->parseTimeRange($compFilterNode);
-
-            if ($compFilter['time-range'] && !in_array($compFilter['name'],array(
-                'VEVENT',
-                'VTODO',
-                'VJOURNAL',
-                'VFREEBUSY',
-                'VALARM',
-            ))) {
-                throw new Sabre_DAV_Exception_BadRequest('The time-range filter is not defined for the ' . $compFilter['name'] . ' component');
-            };
-
-            $result[] = $compFilter;
-
-        }
-
-        return $result;
-
-    }
-
-    /**
-     * Parses all the prop-filter elements from a node
-     *
-     * @param DOMElement $parentNode
-     * @return array
-     */
-    protected function parsePropFilters(DOMElement $parentNode) {
-
-        $propFilterNodes = $this->xpath->query('cal:prop-filter', $parentNode);
-        $result = array();
-
-        for ($ii=0; $ii < $propFilterNodes->length; $ii++) {
-
-            $propFilterNode = $propFilterNodes->item($ii);
-            $propFilter = array();
-            $propFilter['name'] = $propFilterNode->getAttribute('name');
-            $propFilter['is-not-defined'] = $this->xpath->query('cal:is-not-defined', $propFilterNode)->length>0;
-            $propFilter['param-filters'] = $this->parseParamFilters($propFilterNode);
-            $propFilter['text-match'] = $this->parseTextMatch($propFilterNode);
-            $propFilter['time-range'] = $this->parseTimeRange($propFilterNode);
-
-            $result[] = $propFilter;
-
-        }
-
-        return $result;
-
-    }
-
-    /**
-     * Parses the param-filter element
-     *
-     * @param DOMElement $parentNode
-     * @return array
-     */
-    protected function parseParamFilters(DOMElement $parentNode) {
-
-        $paramFilterNodes = $this->xpath->query('cal:param-filter', $parentNode);
-        $result = array();
-
-        for($ii=0;$ii<$paramFilterNodes->length;$ii++) {
-
-            $paramFilterNode = $paramFilterNodes->item($ii);
-            $paramFilter = array();
-            $paramFilter['name'] = $paramFilterNode->getAttribute('name');
-            $paramFilter['is-not-defined'] = $this->xpath->query('cal:is-not-defined', $paramFilterNode)->length>0;
-            $paramFilter['text-match'] = $this->parseTextMatch($paramFilterNode);
-
-            $result[] = $paramFilter;
-
-        }
-
-        return $result;
-
-    }
-
-    /**
-     * Parses the text-match element
-     *
-     * @param DOMElement $parentNode
-     * @return array|null
-     */
-    protected function parseTextMatch(DOMElement $parentNode) {
-
-        $textMatchNodes = $this->xpath->query('cal:text-match', $parentNode);
-
-        if ($textMatchNodes->length === 0)
-            return null;
-
-        $textMatchNode = $textMatchNodes->item(0);
-        $negateCondition = $textMatchNode->getAttribute('negate-condition');
-        $negateCondition = $negateCondition==='yes';
-        $collation = $textMatchNode->getAttribute('collation');
-        if (!$collation) $collation = 'i;ascii-casemap';
-
-        return array(
-            'negate-condition' => $negateCondition,
-            'collation' => $collation,
-            'value' => $textMatchNode->nodeValue
-        );
-
-    }
-
-    /**
-     * Parses the time-range element
-     *
-     * @param DOMElement $parentNode
-     * @return array|null
-     */
-    protected function parseTimeRange(DOMElement $parentNode) {
-
-        $timeRangeNodes = $this->xpath->query('cal:time-range', $parentNode);
-        if ($timeRangeNodes->length === 0) {
-            return null;
-        }
-
-        $timeRangeNode = $timeRangeNodes->item(0);
-
-        if ($start = $timeRangeNode->getAttribute('start')) {
-            $start = Sabre_VObject_DateTimeParser::parseDateTime($start);
-        } else {
-            $start = null;
-        }
-        if ($end = $timeRangeNode->getAttribute('end')) {
-            $end = Sabre_VObject_DateTimeParser::parseDateTime($end);
-        } else {
-            $end = null;
-        }
-
-        if (!is_null($start) && !is_null($end) && $end <= $start) {
-            throw new Sabre_DAV_Exception_BadRequest('The end-date must be larger than the start-date in the time-range filter');
-        }
-
-        return array(
-            'start' => $start,
-            'end' => $end,
-        );
-
-    }
-
-    /**
-     * Parses the CALDAV:expand element
-     * 
-     * @param DOMElement $parentNode 
-     * @return void
-     */
-    protected function parseExpand(DOMElement $parentNode) {
-
-        $start = $parentNode->getAttribute('start');
-        if(!$start) {
-            throw new Sabre_DAV_Exception_BadRequest('The "start" attribute is required for the CALDAV:expand element');
-        } 
-        $start = Sabre_VObject_DateTimeParser::parseDateTime($start);
-
-        $end = $parentNode->getAttribute('end');
-        if(!$end) {
-            throw new Sabre_DAV_Exception_BadRequest('The "end" attribute is required for the CALDAV:expand element');
-        } 
-        $end = Sabre_VObject_DateTimeParser::parseDateTime($end);
-        
-        if ($end <= $start) {
-            throw new Sabre_DAV_Exception_BadRequest('The end-date must be larger than the start-date in the expand element.');
-        }
-
-        return array(
-            'start' => $start,
-            'end' => $end,
-        );
-
-    }
-
-}
diff --git a/3rdparty/Sabre/CalDAV/CalendarQueryValidator.php b/3rdparty/Sabre/CalDAV/CalendarQueryValidator.php
deleted file mode 100755
index 4bcd32cdf88..00000000000
--- a/3rdparty/Sabre/CalDAV/CalendarQueryValidator.php
+++ /dev/null
@@ -1,369 +0,0 @@
-<?php
-
-/**
- * CalendarQuery Validator
- *
- * This class is responsible for checking if an iCalendar object matches a set
- * of filters. The main function to do this is 'validate'.
- *
- * This is used to determine which icalendar objects should be returned for a
- * calendar-query REPORT request.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/)
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_CalendarQueryValidator {
-
-    /**
-     * Verify if a list of filters applies to the calendar data object
-     *
-     * The list of filters must be formatted as parsed by Sabre_CalDAV_CalendarQueryParser
-     *
-     * @param Sabre_VObject_Component $vObject
-     * @param array $filters
-     * @return bool
-     */
-    public function validate(Sabre_VObject_Component $vObject,array $filters) {
-
-        // The top level object is always a component filter.
-        // We'll parse it manually, as it's pretty simple.
-        if ($vObject->name !== $filters['name']) {
-            return false;
-        }
-
-        return
-            $this->validateCompFilters($vObject, $filters['comp-filters']) &&
-            $this->validatePropFilters($vObject, $filters['prop-filters']);
-
-
-    }
-
-    /**
-     * This method checks the validity of comp-filters.
-     *
-     * A list of comp-filters needs to be specified. Also the parent of the
-     * component we're checking should be specified, not the component to check
-     * itself.
-     *
-     * @param Sabre_VObject_Component $parent
-     * @param array $filters
-     * @return bool
-     */
-    protected function validateCompFilters(Sabre_VObject_Component $parent, array $filters) {
-
-        foreach($filters as $filter) {
-
-            $isDefined = isset($parent->$filter['name']);
-
-            if ($filter['is-not-defined']) {
-
-                if ($isDefined) {
-                    return false;
-                } else {
-                    continue;
-                }
-
-            }
-            if (!$isDefined) {
-                return false;
-            }
-
-            if ($filter['time-range']) {
-                foreach($parent->$filter['name'] as $subComponent) {
-                    if ($this->validateTimeRange($subComponent, $filter['time-range']['start'], $filter['time-range']['end'])) {
-                        continue 2;
-                    }
-                }
-                return false;
-            }
-
-            if (!$filter['comp-filters'] && !$filter['prop-filters']) {
-                continue;
-            }
-
-            // If there are sub-filters, we need to find at least one component
-            // for which the subfilters hold true.
-            foreach($parent->$filter['name'] as $subComponent) {
-
-                if (
-                    $this->validateCompFilters($subComponent, $filter['comp-filters']) &&
-                    $this->validatePropFilters($subComponent, $filter['prop-filters'])) {
-                        // We had a match, so this comp-filter succeeds
-                        continue 2;
-                }
-
-            }
-
-            // If we got here it means there were sub-comp-filters or
-            // sub-prop-filters and there was no match. This means this filter
-            // needs to return false.
-            return false;
-
-        }
-
-        // If we got here it means we got through all comp-filters alive so the
-        // filters were all true.
-        return true;
-
-    }
-
-    /**
-     * This method checks the validity of prop-filters.
-     *
-     * A list of prop-filters needs to be specified. Also the parent of the
-     * property we're checking should be specified, not the property to check
-     * itself.
-     *
-     * @param Sabre_VObject_Component $parent
-     * @param array $filters
-     * @return bool
-     */
-    protected function validatePropFilters(Sabre_VObject_Component $parent, array $filters) {
-
-        foreach($filters as $filter) {
-
-            $isDefined = isset($parent->$filter['name']);
-
-            if ($filter['is-not-defined']) {
-
-                if ($isDefined) {
-                    return false;
-                } else {
-                    continue;
-                }
-
-            }
-            if (!$isDefined) {
-                return false;
-            }
-
-            if ($filter['time-range']) {
-                foreach($parent->$filter['name'] as $subComponent) {
-                    if ($this->validateTimeRange($subComponent, $filter['time-range']['start'], $filter['time-range']['end'])) {
-                        continue 2;
-                    }
-                }
-                return false;
-            }
-
-            if (!$filter['param-filters'] && !$filter['text-match']) {
-                continue;
-            }
-
-            // If there are sub-filters, we need to find at least one property
-            // for which the subfilters hold true.
-            foreach($parent->$filter['name'] as $subComponent) {
-
-                if(
-                    $this->validateParamFilters($subComponent, $filter['param-filters']) &&
-                    (!$filter['text-match'] || $this->validateTextMatch($subComponent, $filter['text-match']))
-                ) {
-                    // We had a match, so this prop-filter succeeds
-                    continue 2;
-                }
-
-            }
-
-            // If we got here it means there were sub-param-filters or
-            // text-match filters and there was no match. This means the
-            // filter needs to return false.
-            return false;
-
-        }
-
-        // If we got here it means we got through all prop-filters alive so the
-        // filters were all true.
-        return true;
-
-    }
-
-    /**
-     * This method checks the validity of param-filters.
-     *
-     * A list of param-filters needs to be specified. Also the parent of the
-     * parameter we're checking should be specified, not the parameter to check
-     * itself.
-     *
-     * @param Sabre_VObject_Property $parent
-     * @param array $filters
-     * @return bool
-     */
-    protected function validateParamFilters(Sabre_VObject_Property $parent, array $filters) {
-
-        foreach($filters as $filter) {
-
-            $isDefined = isset($parent[$filter['name']]);
-
-            if ($filter['is-not-defined']) {
-
-                if ($isDefined) {
-                    return false;
-                } else {
-                    continue;
-                }
-
-            }
-            if (!$isDefined) {
-                return false;
-            }
-
-            if (!$filter['text-match']) {
-                continue;
-            }
-
-            // If there are sub-filters, we need to find at least one parameter
-            // for which the subfilters hold true.
-            foreach($parent[$filter['name']] as $subParam) {
-
-                if($this->validateTextMatch($subParam,$filter['text-match'])) {
-                    // We had a match, so this param-filter succeeds
-                    continue 2;
-                }
-
-            }
-
-            // If we got here it means there was a text-match filter and there
-            // were no matches. This means the filter needs to return false.
-            return false;
-
-        }
-
-        // If we got here it means we got through all param-filters alive so the
-        // filters were all true.
-        return true;
-
-    }
-
-    /**
-     * This method checks the validity of a text-match.
-     *
-     * A single text-match should be specified as well as the specific property
-     * or parameter we need to validate.
-     *
-     * @param Sabre_VObject_Node $parent
-     * @param array $textMatch
-     * @return bool
-     */
-    protected function validateTextMatch(Sabre_VObject_Node $parent, array $textMatch) {
-
-        $value = (string)$parent;
-
-        $isMatching = Sabre_DAV_StringUtil::textMatch($value, $textMatch['value'], $textMatch['collation']);
-
-        return ($textMatch['negate-condition'] xor $isMatching);
-
-    }
-
-    /**
-     * Validates if a component matches the given time range.
-     *
-     * This is all based on the rules specified in rfc4791, which are quite
-     * complex.
-     *
-     * @param Sabre_VObject_Node $component
-     * @param DateTime $start
-     * @param DateTime $end
-     * @return bool
-     */
-    protected function validateTimeRange(Sabre_VObject_Node $component, $start, $end) {
-
-        if (is_null($start)) {
-            $start = new DateTime('1900-01-01');
-        }
-        if (is_null($end)) {
-            $end = new DateTime('3000-01-01');
-        }
-
-        switch($component->name) {
-
-            case 'VEVENT' :
-            case 'VTODO' :
-            case 'VJOURNAL' :
-
-                return $component->isInTimeRange($start, $end);
-
-            case 'VALARM' :
-
-                // If the valarm is wrapped in a recurring event, we need to
-                // expand the recursions, and validate each.
-                //
-                // Our datamodel doesn't easily allow us to do this straight
-                // in the VALARM component code, so this is a hack, and an
-                // expensive one too.
-                if ($component->parent->name === 'VEVENT' && $component->parent->RRULE) {
-
-                    // Fire up the iterator!
-                    $it = new Sabre_VObject_RecurrenceIterator($component->parent->parent, (string)$component->parent->UID);
-                    while($it->valid()) {
-                        $expandedEvent = $it->getEventObject();
-
-                        // We need to check from these expanded alarms, which
-                        // one is the first to trigger. Based on this, we can
-                        // determine if we can 'give up' expanding events.
-                        $firstAlarm = null;
-                        foreach($expandedEvent->VALARM as $expandedAlarm) {
-
-                            $effectiveTrigger = $expandedAlarm->getEffectiveTriggerTime();
-                            if ($expandedAlarm->isInTimeRange($start, $end)) {
-                                return true;
-                            }
-
-                            if ((string)$expandedAlarm->TRIGGER['VALUE'] === 'DATE-TIME') {
-                                // This is an alarm with a non-relative trigger
-                                // time, likely created by a buggy client. The
-                                // implication is that every alarm in this
-                                // recurring event trigger at the exact same
-                                // time. It doesn't make sense to traverse
-                                // further.
-                            } else {
-                                // We store the first alarm as a means to
-                                // figure out when we can stop traversing.
-                                if (!$firstAlarm || $effectiveTrigger < $firstAlarm) {
-                                    $firstAlarm = $effectiveTrigger;
-                                }
-                            }
-
-                        }
-                        if (is_null($firstAlarm)) {
-                            // No alarm was found.
-                            //
-                            // Or technically: No alarm that will change for
-                            // every instance of the recurrence was found,
-                            // which means we can assume there was no match.
-                            return false;
-                        }
-                        if ($firstAlarm > $end) {
-                            return false;
-                        }
-                        $it->next();
-                    }
-                    return false;
-                } else {
-                    return $component->isInTimeRange($start, $end);
-                }
-
-            case 'VFREEBUSY' :
-                throw new Sabre_DAV_Exception_NotImplemented('time-range filters are currently not supported on ' . $component->name . ' components');
-
-            case 'COMPLETED' :
-            case 'CREATED' :
-            case 'DTEND' :
-            case 'DTSTAMP' :
-            case 'DTSTART' :
-            case 'DUE' :
-            case 'LAST-MODIFIED' :
-                return ($start <= $component->getDateTime() && $end >= $component->getDateTime());
-
-
-
-            default :
-                throw new Sabre_DAV_Exception_BadRequest('You cannot create a time-range filter on a ' . $component->name . ' component');
-
-        }
-
-    }
-
-}
diff --git a/3rdparty/Sabre/CalDAV/CalendarRootNode.php b/3rdparty/Sabre/CalDAV/CalendarRootNode.php
deleted file mode 100755
index 3907913cc78..00000000000
--- a/3rdparty/Sabre/CalDAV/CalendarRootNode.php
+++ /dev/null
@@ -1,75 +0,0 @@
-<?php
-
-/**
- * Users collection
- *
- * This object is responsible for generating a collection of users.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_CalendarRootNode extends Sabre_DAVACL_AbstractPrincipalCollection {
-
-    /**
-     * CalDAV backend
-     *
-     * @var Sabre_CalDAV_Backend_Abstract
-     */
-    protected $caldavBackend;
-
-    /**
-     * Constructor
-     *
-     * This constructor needs both an authentication and a caldav backend.
-     *
-     * By default this class will show a list of calendar collections for
-     * principals in the 'principals' collection. If your main principals are
-     * actually located in a different path, use the $principalPrefix argument
-     * to override this.
-     *
-     *
-     * @param Sabre_DAVACL_IPrincipalBackend $principalBackend
-     * @param Sabre_CalDAV_Backend_Abstract $caldavBackend
-     * @param string $principalPrefix
-     */
-    public function __construct(Sabre_DAVACL_IPrincipalBackend $principalBackend,Sabre_CalDAV_Backend_Abstract $caldavBackend, $principalPrefix = 'principals') {
-
-        parent::__construct($principalBackend, $principalPrefix);
-        $this->caldavBackend = $caldavBackend;
-
-    }
-
-    /**
-     * Returns the nodename
-     *
-     * We're overriding this, because the default will be the 'principalPrefix',
-     * and we want it to be Sabre_CalDAV_Plugin::CALENDAR_ROOT
-     *
-     * @return string
-     */
-    public function getName() {
-
-        return Sabre_CalDAV_Plugin::CALENDAR_ROOT;
-
-    }
-
-    /**
-     * This method returns a node for a principal.
-     *
-     * The passed array contains principal information, and is guaranteed to
-     * at least contain a uri item. Other properties may or may not be
-     * supplied by the authentication backend.
-     *
-     * @param array $principal
-     * @return Sabre_DAV_INode
-     */
-    public function getChildForPrincipal(array $principal) {
-
-        return new Sabre_CalDAV_UserCalendars($this->principalBackend, $this->caldavBackend, $principal['uri']);
-
-    }
-
-}
diff --git a/3rdparty/Sabre/CalDAV/ICSExportPlugin.php b/3rdparty/Sabre/CalDAV/ICSExportPlugin.php
deleted file mode 100755
index ec42b406b2f..00000000000
--- a/3rdparty/Sabre/CalDAV/ICSExportPlugin.php
+++ /dev/null
@@ -1,139 +0,0 @@
-<?php
-
-/**
- * ICS Exporter
- *
- * This plugin adds the ability to export entire calendars as .ics files.
- * This is useful for clients that don't support CalDAV yet. They often do
- * support ics files.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/)
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_ICSExportPlugin extends Sabre_DAV_ServerPlugin {
-
-    /**
-     * Reference to Server class
-     *
-     * @var Sabre_DAV_Server
-     */
-    private $server;
-
-    /**
-     * Initializes the plugin and registers event handlers
-     *
-     * @param Sabre_DAV_Server $server
-     * @return void
-     */
-    public function initialize(Sabre_DAV_Server $server) {
-
-        $this->server = $server;
-        $this->server->subscribeEvent('beforeMethod',array($this,'beforeMethod'), 90);
-
-    }
-
-    /**
-     * 'beforeMethod' event handles. This event handles intercepts GET requests ending
-     * with ?export
-     *
-     * @param string $method
-     * @param string $uri
-     * @return bool
-     */
-    public function beforeMethod($method, $uri) {
-
-        if ($method!='GET') return;
-        if ($this->server->httpRequest->getQueryString()!='export') return;
-
-        // splitting uri
-        list($uri) = explode('?',$uri,2);
-
-        $node = $this->server->tree->getNodeForPath($uri);
-
-        if (!($node instanceof Sabre_CalDAV_Calendar)) return;
-
-        // Checking ACL, if available.
-        if ($aclPlugin = $this->server->getPlugin('acl')) {
-            $aclPlugin->checkPrivileges($uri, '{DAV:}read');
-        }
-
-        $this->server->httpResponse->setHeader('Content-Type','text/calendar');
-        $this->server->httpResponse->sendStatus(200);
-
-        $nodes = $this->server->getPropertiesForPath($uri, array(
-            '{' . Sabre_CalDAV_Plugin::NS_CALDAV . '}calendar-data',
-        ),1);
-
-        $this->server->httpResponse->sendBody($this->generateICS($nodes));
-
-        // Returning false to break the event chain
-        return false;
-
-    }
-
-    /**
-     * Merges all calendar objects, and builds one big ics export
-     *
-     * @param array $nodes
-     * @return string
-     */
-    public function generateICS(array $nodes) {
-
-        $calendar = new Sabre_VObject_Component('vcalendar');
-        $calendar->version = '2.0';
-        if (Sabre_DAV_Server::$exposeVersion) {
-            $calendar->prodid = '-//SabreDAV//SabreDAV ' . Sabre_DAV_Version::VERSION . '//EN';
-        } else {
-            $calendar->prodid = '-//SabreDAV//SabreDAV//EN';
-        }
-        $calendar->calscale = 'GREGORIAN';
-
-        $collectedTimezones = array();
-
-        $timezones = array();
-        $objects = array();
-
-        foreach($nodes as $node) {
-
-            if (!isset($node[200]['{' . Sabre_CalDAV_Plugin::NS_CALDAV . '}calendar-data'])) {
-                continue;
-            }
-            $nodeData = $node[200]['{' . Sabre_CalDAV_Plugin::NS_CALDAV . '}calendar-data'];
-
-            $nodeComp = Sabre_VObject_Reader::read($nodeData);
-
-            foreach($nodeComp->children() as $child) {
-
-                switch($child->name) {
-                    case 'VEVENT' :
-                    case 'VTODO' :
-                    case 'VJOURNAL' :
-                        $objects[] = $child;
-                        break;
-
-                    // VTIMEZONE is special, because we need to filter out the duplicates
-                    case 'VTIMEZONE' :
-                        // Naively just checking tzid.
-                        if (in_array((string)$child->TZID, $collectedTimezones)) continue;
-
-                        $timezones[] = $child;
-                        $collectedTimezones[] = $child->TZID;
-                        break;
-
-                }
-
-            }
-
-        }
-
-        foreach($timezones as $tz) $calendar->add($tz);
-        foreach($objects as $obj) $calendar->add($obj);
-
-        return $calendar->serialize();
-
-    }
-
-}
diff --git a/3rdparty/Sabre/CalDAV/ICalendar.php b/3rdparty/Sabre/CalDAV/ICalendar.php
deleted file mode 100755
index 15d51ebcf79..00000000000
--- a/3rdparty/Sabre/CalDAV/ICalendar.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php
-
-/**
- * Calendar interface
- *
- * Implement this interface to allow a node to be recognized as an calendar.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-interface Sabre_CalDAV_ICalendar extends Sabre_DAV_ICollection {
-
-
-
-}
diff --git a/3rdparty/Sabre/CalDAV/ICalendarObject.php b/3rdparty/Sabre/CalDAV/ICalendarObject.php
deleted file mode 100755
index 280f982a310..00000000000
--- a/3rdparty/Sabre/CalDAV/ICalendarObject.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-/**
- * CalendarObject interface
-/**
- * Extend the ICalendarObject interface to allow your custom nodes to be picked up as
- * CalendarObjects.
- *
- * Calendar objects are resources such as Events, Todo's or Journals.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-interface Sabre_CalDAV_ICalendarObject extends Sabre_DAV_IFile {
-
-}
-
diff --git a/3rdparty/Sabre/CalDAV/Plugin.php b/3rdparty/Sabre/CalDAV/Plugin.php
deleted file mode 100755
index 5903968c003..00000000000
--- a/3rdparty/Sabre/CalDAV/Plugin.php
+++ /dev/null
@@ -1,865 +0,0 @@
-<?php
-
-/**
- * CalDAV plugin
- *
- * This plugin provides functionality added by CalDAV (RFC 4791)
- * It implements new reports, and the MKCALENDAR method.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/)
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_Plugin extends Sabre_DAV_ServerPlugin {
-
-    /**
-     * This is the official CalDAV namespace
-     */
-    const NS_CALDAV = 'urn:ietf:params:xml:ns:caldav';
-
-    /**
-     * This is the namespace for the proprietary calendarserver extensions
-     */
-    const NS_CALENDARSERVER = 'http://calendarserver.org/ns/';
-
-    /**
-     * The following constants are used to differentiate
-     * the various filters for the calendar-query report
-     */
-    const FILTER_COMPFILTER   = 1;
-    const FILTER_TIMERANGE    = 3;
-    const FILTER_PROPFILTER   = 4;
-    const FILTER_PARAMFILTER  = 5;
-    const FILTER_TEXTMATCH    = 6;
-
-    /**
-     * The hardcoded root for calendar objects. It is unfortunate
-     * that we're stuck with it, but it will have to do for now
-     */
-    const CALENDAR_ROOT = 'calendars';
-
-    /**
-     * Reference to server object
-     *
-     * @var Sabre_DAV_Server
-     */
-    private $server;
-
-    /**
-     * The email handler for invites and other scheduling messages.
-     * 
-     * @var Sabre_CalDAV_Schedule_IMip 
-     */
-    protected $imipHandler;
-
-    /**
-     * Sets the iMIP handler.
-     *
-     * iMIP = The email transport of iCalendar scheduling messages. Setting 
-     * this is optional, but if you want the server to allow invites to be sent 
-     * out, you must set a handler.
-     *
-     * Specifically iCal will plain assume that the server supports this. If 
-     * the server doesn't, iCal will display errors when inviting people to 
-     * events.
-     *
-     * @param Sabre_CalDAV_Schedule_IMip $imipHandler 
-     * @return void
-     */
-    public function setIMipHandler(Sabre_CalDAV_Schedule_IMip $imipHandler) {
-
-        $this->imipHandler = $imipHandler;
-
-    }
-
-    /**
-     * Use this method to tell the server this plugin defines additional
-     * HTTP methods.
-     *
-     * This method is passed a uri. It should only return HTTP methods that are
-     * available for the specified uri.
-     *
-     * @param string $uri
-     * @return array
-     */
-    public function getHTTPMethods($uri) {
-
-        // The MKCALENDAR is only available on unmapped uri's, whose
-        // parents extend IExtendedCollection
-        list($parent, $name) = Sabre_DAV_URLUtil::splitPath($uri);
-
-        $node = $this->server->tree->getNodeForPath($parent);
-
-        if ($node instanceof Sabre_DAV_IExtendedCollection) {
-            try {
-                $node->getChild($name);
-            } catch (Sabre_DAV_Exception_NotFound $e) {
-                return array('MKCALENDAR');
-            }
-        }
-        return array();
-
-    }
-
-    /**
-     * Returns a list of features for the DAV: HTTP header.
-     *
-     * @return array
-     */
-    public function getFeatures() {
-
-        return array('calendar-access', 'calendar-proxy');
-
-    }
-
-    /**
-     * Returns a plugin name.
-     *
-     * Using this name other plugins will be able to access other plugins
-     * using Sabre_DAV_Server::getPlugin
-     *
-     * @return string
-     */
-    public function getPluginName() {
-
-        return 'caldav';
-
-    }
-
-    /**
-     * Returns a list of reports this plugin supports.
-     *
-     * This will be used in the {DAV:}supported-report-set property.
-     * Note that you still need to subscribe to the 'report' event to actually
-     * implement them
-     *
-     * @param string $uri
-     * @return array
-     */
-    public function getSupportedReportSet($uri) {
-
-        $node = $this->server->tree->getNodeForPath($uri);
-
-        $reports = array();
-        if ($node instanceof Sabre_CalDAV_ICalendar || $node instanceof Sabre_CalDAV_ICalendarObject) {
-            $reports[] = '{' . self::NS_CALDAV . '}calendar-multiget';
-            $reports[] = '{' . self::NS_CALDAV . '}calendar-query';
-        }
-        if ($node instanceof Sabre_CalDAV_ICalendar) {
-            $reports[] = '{' . self::NS_CALDAV . '}free-busy-query';
-        }
-        return $reports;
-
-    }
-
-    /**
-     * Initializes the plugin
-     *
-     * @param Sabre_DAV_Server $server
-     * @return void
-     */
-    public function initialize(Sabre_DAV_Server $server) {
-
-        $this->server = $server;
-
-        $server->subscribeEvent('unknownMethod',array($this,'unknownMethod'));
-        //$server->subscribeEvent('unknownMethod',array($this,'unknownMethod2'),1000);
-        $server->subscribeEvent('report',array($this,'report'));
-        $server->subscribeEvent('beforeGetProperties',array($this,'beforeGetProperties'));
-        $server->subscribeEvent('onHTMLActionsPanel', array($this,'htmlActionsPanel'));
-        $server->subscribeEvent('onBrowserPostAction', array($this,'browserPostAction'));
-        $server->subscribeEvent('beforeWriteContent', array($this, 'beforeWriteContent'));
-        $server->subscribeEvent('beforeCreateFile', array($this, 'beforeCreateFile'));
-
-        $server->xmlNamespaces[self::NS_CALDAV] = 'cal';
-        $server->xmlNamespaces[self::NS_CALENDARSERVER] = 'cs';
-
-        $server->propertyMap['{' . self::NS_CALDAV . '}supported-calendar-component-set'] = 'Sabre_CalDAV_Property_SupportedCalendarComponentSet';
-
-        $server->resourceTypeMapping['Sabre_CalDAV_ICalendar'] = '{urn:ietf:params:xml:ns:caldav}calendar';
-        $server->resourceTypeMapping['Sabre_CalDAV_Schedule_IOutbox'] = '{urn:ietf:params:xml:ns:caldav}schedule-outbox';
-        $server->resourceTypeMapping['Sabre_CalDAV_Principal_ProxyRead'] = '{http://calendarserver.org/ns/}calendar-proxy-read';
-        $server->resourceTypeMapping['Sabre_CalDAV_Principal_ProxyWrite'] = '{http://calendarserver.org/ns/}calendar-proxy-write';
-
-        array_push($server->protectedProperties,
-
-            '{' . self::NS_CALDAV . '}supported-calendar-component-set',
-            '{' . self::NS_CALDAV . '}supported-calendar-data',
-            '{' . self::NS_CALDAV . '}max-resource-size',
-            '{' . self::NS_CALDAV . '}min-date-time',
-            '{' . self::NS_CALDAV . '}max-date-time',
-            '{' . self::NS_CALDAV . '}max-instances',
-            '{' . self::NS_CALDAV . '}max-attendees-per-instance',
-            '{' . self::NS_CALDAV . '}calendar-home-set',
-            '{' . self::NS_CALDAV . '}supported-collation-set',
-            '{' . self::NS_CALDAV . '}calendar-data',
-
-            // scheduling extension
-            '{' . self::NS_CALDAV . '}schedule-inbox-URL',
-            '{' . self::NS_CALDAV . '}schedule-outbox-URL',
-            '{' . self::NS_CALDAV . '}calendar-user-address-set',
-            '{' . self::NS_CALDAV . '}calendar-user-type',
-
-            // CalendarServer extensions
-            '{' . self::NS_CALENDARSERVER . '}getctag',
-            '{' . self::NS_CALENDARSERVER . '}calendar-proxy-read-for',
-            '{' . self::NS_CALENDARSERVER . '}calendar-proxy-write-for'
-
-        );
-    }
-
-    /**
-     * This function handles support for the MKCALENDAR method
-     *
-     * @param string $method
-     * @param string $uri
-     * @return bool
-     */
-    public function unknownMethod($method, $uri) {
-
-        switch ($method) {
-            case 'MKCALENDAR' :
-                $this->httpMkCalendar($uri);
-                // false is returned to stop the propagation of the
-                // unknownMethod event.
-                return false;
-            case 'POST' :
-                // Checking if we're talking to an outbox
-                try {
-                    $node = $this->server->tree->getNodeForPath($uri);
-                } catch (Sabre_DAV_Exception_NotFound $e) {
-                    return;
-                }
-                if (!$node instanceof Sabre_CalDAV_Schedule_IOutbox)
-                    return;
-
-                $this->outboxRequest($node);
-                return false;
-
-        }
-
-    }
-
-    /**
-     * This functions handles REPORT requests specific to CalDAV
-     *
-     * @param string $reportName
-     * @param DOMNode $dom
-     * @return bool
-     */
-    public function report($reportName,$dom) {
-
-        switch($reportName) {
-            case '{'.self::NS_CALDAV.'}calendar-multiget' :
-                $this->calendarMultiGetReport($dom);
-                return false;
-            case '{'.self::NS_CALDAV.'}calendar-query' :
-                $this->calendarQueryReport($dom);
-                return false;
-            case '{'.self::NS_CALDAV.'}free-busy-query' :
-                $this->freeBusyQueryReport($dom);
-                return false;
-
-        }
-
-
-    }
-
-    /**
-     * This function handles the MKCALENDAR HTTP method, which creates
-     * a new calendar.
-     *
-     * @param string $uri
-     * @return void
-     */
-    public function httpMkCalendar($uri) {
-
-        // Due to unforgivable bugs in iCal, we're completely disabling MKCALENDAR support
-        // for clients matching iCal in the user agent
-        //$ua = $this->server->httpRequest->getHeader('User-Agent');
-        //if (strpos($ua,'iCal/')!==false) {
-        //    throw new Sabre_DAV_Exception_Forbidden('iCal has major bugs in it\'s RFC3744 support. Therefore we are left with no other choice but disabling this feature.');
-        //}
-
-        $body = $this->server->httpRequest->getBody(true);
-        $properties = array();
-
-        if ($body) {
-
-            $dom = Sabre_DAV_XMLUtil::loadDOMDocument($body);
-
-            foreach($dom->firstChild->childNodes as $child) {
-
-                if (Sabre_DAV_XMLUtil::toClarkNotation($child)!=='{DAV:}set') continue;
-                foreach(Sabre_DAV_XMLUtil::parseProperties($child,$this->server->propertyMap) as $k=>$prop) {
-                    $properties[$k] = $prop;
-                }
-
-            }
-        }
-
-        $resourceType = array('{DAV:}collection','{urn:ietf:params:xml:ns:caldav}calendar');
-
-        $this->server->createCollection($uri,$resourceType,$properties);
-
-        $this->server->httpResponse->sendStatus(201);
-        $this->server->httpResponse->setHeader('Content-Length',0);
-    }
-
-    /**
-     * beforeGetProperties
-     *
-     * This method handler is invoked before any after properties for a
-     * resource are fetched. This allows us to add in any CalDAV specific
-     * properties.
-     *
-     * @param string $path
-     * @param Sabre_DAV_INode $node
-     * @param array $requestedProperties
-     * @param array $returnedProperties
-     * @return void
-     */
-    public function beforeGetProperties($path, Sabre_DAV_INode $node, &$requestedProperties, &$returnedProperties) {
-
-        if ($node instanceof Sabre_DAVACL_IPrincipal) {
-
-            // calendar-home-set property
-            $calHome = '{' . self::NS_CALDAV . '}calendar-home-set';
-            if (in_array($calHome,$requestedProperties)) {
-                $principalId = $node->getName();
-                $calendarHomePath = self::CALENDAR_ROOT . '/' . $principalId . '/';
-                unset($requestedProperties[$calHome]);
-                $returnedProperties[200][$calHome] = new Sabre_DAV_Property_Href($calendarHomePath);
-            }
-
-            // schedule-outbox-URL property
-            $scheduleProp = '{' . self::NS_CALDAV . '}schedule-outbox-URL';
-            if (in_array($scheduleProp,$requestedProperties)) {
-                $principalId = $node->getName();
-                $outboxPath = self::CALENDAR_ROOT . '/' . $principalId . '/outbox';
-                unset($requestedProperties[$scheduleProp]);
-                $returnedProperties[200][$scheduleProp] = new Sabre_DAV_Property_Href($outboxPath);
-            }
-
-            // calendar-user-address-set property
-            $calProp = '{' . self::NS_CALDAV . '}calendar-user-address-set';
-            if (in_array($calProp,$requestedProperties)) {
-
-                $addresses = $node->getAlternateUriSet();
-                $addresses[] = $this->server->getBaseUri() . $node->getPrincipalUrl();
-                unset($requestedProperties[$calProp]);
-                $returnedProperties[200][$calProp] = new Sabre_DAV_Property_HrefList($addresses, false);
-
-            }
-
-            // These two properties are shortcuts for ical to easily find
-            // other principals this principal has access to.
-            $propRead = '{' . self::NS_CALENDARSERVER . '}calendar-proxy-read-for';
-            $propWrite = '{' . self::NS_CALENDARSERVER . '}calendar-proxy-write-for';
-            if (in_array($propRead,$requestedProperties) || in_array($propWrite,$requestedProperties)) {
-
-                $membership = $node->getGroupMembership();
-                $readList = array();
-                $writeList = array();
-
-                foreach($membership as $group) {
-
-                    $groupNode = $this->server->tree->getNodeForPath($group);
-
-                    // If the node is either ap proxy-read or proxy-write
-                    // group, we grab the parent principal and add it to the
-                    // list.
-                    if ($groupNode instanceof Sabre_CalDAV_Principal_ProxyRead) {
-                        list($readList[]) = Sabre_DAV_URLUtil::splitPath($group);
-                    }
-                    if ($groupNode instanceof Sabre_CalDAV_Principal_ProxyWrite) {
-                        list($writeList[]) = Sabre_DAV_URLUtil::splitPath($group);
-                    }
-
-                }
-                if (in_array($propRead,$requestedProperties)) {
-                    unset($requestedProperties[$propRead]);
-                    $returnedProperties[200][$propRead] = new Sabre_DAV_Property_HrefList($readList);
-                }
-                if (in_array($propWrite,$requestedProperties)) {
-                    unset($requestedProperties[$propWrite]);
-                    $returnedProperties[200][$propWrite] = new Sabre_DAV_Property_HrefList($writeList);
-                }
-
-            }
-
-        } // instanceof IPrincipal
-
-
-        if ($node instanceof Sabre_CalDAV_ICalendarObject) {
-            // The calendar-data property is not supposed to be a 'real'
-            // property, but in large chunks of the spec it does act as such.
-            // Therefore we simply expose it as a property.
-            $calDataProp = '{' . Sabre_CalDAV_Plugin::NS_CALDAV . '}calendar-data';
-            if (in_array($calDataProp, $requestedProperties)) {
-                unset($requestedProperties[$calDataProp]);
-                $val = $node->get();
-                if (is_resource($val))
-                    $val = stream_get_contents($val);
-
-                // Taking out \r to not screw up the xml output
-                $returnedProperties[200][$calDataProp] = str_replace("\r","", $val);
-
-            }
-        }
-
-    }
-
-    /**
-     * This function handles the calendar-multiget REPORT.
-     *
-     * This report is used by the client to fetch the content of a series
-     * of urls. Effectively avoiding a lot of redundant requests.
-     *
-     * @param DOMNode $dom
-     * @return void
-     */
-    public function calendarMultiGetReport($dom) {
-
-        $properties = array_keys(Sabre_DAV_XMLUtil::parseProperties($dom->firstChild));
-        $hrefElems = $dom->getElementsByTagNameNS('urn:DAV','href');
-
-        $xpath = new DOMXPath($dom);
-        $xpath->registerNameSpace('cal',Sabre_CalDAV_Plugin::NS_CALDAV);
-        $xpath->registerNameSpace('dav','urn:DAV');
-
-        $expand = $xpath->query('/cal:calendar-multiget/dav:prop/cal:calendar-data/cal:expand');
-        if ($expand->length>0) {
-            $expandElem = $expand->item(0);
-            $start = $expandElem->getAttribute('start');
-            $end = $expandElem->getAttribute('end');
-            if(!$start || !$end) {
-                throw new Sabre_DAV_Exception_BadRequest('The "start" and "end" attributes are required for the CALDAV:expand element');
-            }
-            $start = Sabre_VObject_DateTimeParser::parseDateTime($start);
-            $end = Sabre_VObject_DateTimeParser::parseDateTime($end);
-
-            if ($end <= $start) {
-                throw new Sabre_DAV_Exception_BadRequest('The end-date must be larger than the start-date in the expand element.');
-            }
-
-            $expand = true;
-
-        } else {
-
-            $expand = false;
-
-        }
-
-        foreach($hrefElems as $elem) {
-            $uri = $this->server->calculateUri($elem->nodeValue);
-            list($objProps) = $this->server->getPropertiesForPath($uri,$properties);
-
-            if ($expand && isset($objProps[200]['{' . self::NS_CALDAV . '}calendar-data'])) {
-                $vObject = Sabre_VObject_Reader::read($objProps[200]['{' . self::NS_CALDAV . '}calendar-data']);
-                $vObject->expand($start, $end);
-                $objProps[200]['{' . self::NS_CALDAV . '}calendar-data'] = $vObject->serialize();
-            }
-
-            $propertyList[]=$objProps;
-
-        }
-
-        $this->server->httpResponse->sendStatus(207);
-        $this->server->httpResponse->setHeader('Content-Type','application/xml; charset=utf-8');
-        $this->server->httpResponse->sendBody($this->server->generateMultiStatus($propertyList));
-
-    }
-
-    /**
-     * This function handles the calendar-query REPORT
-     *
-     * This report is used by clients to request calendar objects based on
-     * complex conditions.
-     *
-     * @param DOMNode $dom
-     * @return void
-     */
-    public function calendarQueryReport($dom) {
-
-        $parser = new Sabre_CalDAV_CalendarQueryParser($dom);
-        $parser->parse();
-
-        $requestedCalendarData = true;
-        $requestedProperties = $parser->requestedProperties;
-
-        if (!in_array('{urn:ietf:params:xml:ns:caldav}calendar-data', $requestedProperties)) {
-
-            // We always retrieve calendar-data, as we need it for filtering.
-            $requestedProperties[] = '{urn:ietf:params:xml:ns:caldav}calendar-data';
-
-            // If calendar-data wasn't explicitly requested, we need to remove
-            // it after processing.
-            $requestedCalendarData = false;
-        }
-
-        // These are the list of nodes that potentially match the requirement
-        $candidateNodes = $this->server->getPropertiesForPath(
-            $this->server->getRequestUri(),
-            $requestedProperties,
-            $this->server->getHTTPDepth(0)
-        );
-
-        $verifiedNodes = array();
-
-        $validator = new Sabre_CalDAV_CalendarQueryValidator();
-
-        foreach($candidateNodes as $node) {
-
-            // If the node didn't have a calendar-data property, it must not be a calendar object
-            if (!isset($node[200]['{urn:ietf:params:xml:ns:caldav}calendar-data']))
-                continue;
-
-            $vObject = Sabre_VObject_Reader::read($node[200]['{urn:ietf:params:xml:ns:caldav}calendar-data']);
-            if ($validator->validate($vObject,$parser->filters)) {
-
-                if (!$requestedCalendarData) {
-                    unset($node[200]['{urn:ietf:params:xml:ns:caldav}calendar-data']);
-                }
-                if ($parser->expand) {
-                    $vObject->expand($parser->expand['start'], $parser->expand['end']);
-                    $node[200]['{' . self::NS_CALDAV . '}calendar-data'] = $vObject->serialize();
-                }
-                $verifiedNodes[] = $node;
-            }
-
-        }
-
-        $this->server->httpResponse->sendStatus(207);
-        $this->server->httpResponse->setHeader('Content-Type','application/xml; charset=utf-8');
-        $this->server->httpResponse->sendBody($this->server->generateMultiStatus($verifiedNodes));
-
-    }
-
-    /**
-     * This method is responsible for parsing the request and generating the
-     * response for the CALDAV:free-busy-query REPORT.
-     *
-     * @param DOMNode $dom
-     * @return void
-     */
-    protected function freeBusyQueryReport(DOMNode $dom) {
-
-        $start = null;
-        $end = null;
-
-        foreach($dom->firstChild->childNodes as $childNode) {
-
-            $clark = Sabre_DAV_XMLUtil::toClarkNotation($childNode);
-            if ($clark == '{' . self::NS_CALDAV . '}time-range') {
-                $start = $childNode->getAttribute('start');
-                $end = $childNode->getAttribute('end');
-                break;
-            }
-
-        }
-        if ($start) {
-            $start = Sabre_VObject_DateTimeParser::parseDateTime($start);
-        }
-        if ($end) {
-            $end = Sabre_VObject_DateTimeParser::parseDateTime($end);
-        }
-
-        if (!$start && !$end) {
-            throw new Sabre_DAV_Exception_BadRequest('The freebusy report must have a time-range filter');
-        }
-        $acl = $this->server->getPlugin('acl');
-
-        if (!$acl) {
-            throw new Sabre_DAV_Exception('The ACL plugin must be loaded for free-busy queries to work');
-        }
-        $uri = $this->server->getRequestUri();
-        $acl->checkPrivileges($uri,'{' . self::NS_CALDAV . '}read-free-busy');
-
-        $calendar = $this->server->tree->getNodeForPath($uri);
-        if (!$calendar instanceof Sabre_CalDAV_ICalendar) {
-            throw new Sabre_DAV_Exception_NotImplemented('The free-busy-query REPORT is only implemented on calendars');
-        }
-
-        $objects = array_map(function($child) {
-            $obj = $child->get();
-            if (is_resource($obj)) {
-                $obj = stream_get_contents($obj);
-            }
-            return $obj;
-        }, $calendar->getChildren());
-
-        $generator = new Sabre_VObject_FreeBusyGenerator();
-        $generator->setObjects($objects);
-        $generator->setTimeRange($start, $end);
-        $result = $generator->getResult();
-        $result = $result->serialize();
-
-        $this->server->httpResponse->sendStatus(200);
-        $this->server->httpResponse->setHeader('Content-Type', 'text/calendar');
-        $this->server->httpResponse->setHeader('Content-Length', strlen($result));
-        $this->server->httpResponse->sendBody($result);
-
-    }
-
-    /**
-     * This method is triggered before a file gets updated with new content.
-     *
-     * This plugin uses this method to ensure that CalDAV objects receive
-     * valid calendar data.
-     *
-     * @param string $path
-     * @param Sabre_DAV_IFile $node
-     * @param resource $data
-     * @return void
-     */
-    public function beforeWriteContent($path, Sabre_DAV_IFile $node, &$data) {
-
-        if (!$node instanceof Sabre_CalDAV_ICalendarObject)
-            return;
-
-        $this->validateICalendar($data);
-
-    }
-
-    /**
-     * This method is triggered before a new file is created.
-     *
-     * This plugin uses this method to ensure that newly created calendar
-     * objects contain valid calendar data.
-     *
-     * @param string $path
-     * @param resource $data
-     * @param Sabre_DAV_ICollection $parentNode
-     * @return void
-     */
-    public function beforeCreateFile($path, &$data, Sabre_DAV_ICollection $parentNode) {
-
-        if (!$parentNode instanceof Sabre_CalDAV_Calendar)
-            return;
-
-        $this->validateICalendar($data);
-
-    }
-
-    /**
-     * Checks if the submitted iCalendar data is in fact, valid.
-     *
-     * An exception is thrown if it's not.
-     *
-     * @param resource|string $data
-     * @return void
-     */
-    protected function validateICalendar(&$data) {
-
-        // If it's a stream, we convert it to a string first.
-        if (is_resource($data)) {
-            $data = stream_get_contents($data);
-        }
-
-        // Converting the data to unicode, if needed.
-        $data = Sabre_DAV_StringUtil::ensureUTF8($data);
-
-        try {
-
-            $vobj = Sabre_VObject_Reader::read($data);
-
-        } catch (Sabre_VObject_ParseException $e) {
-
-            throw new Sabre_DAV_Exception_UnsupportedMediaType('This resource only supports valid iCalendar 2.0 data. Parse error: ' . $e->getMessage());
-
-        }
-
-        if ($vobj->name !== 'VCALENDAR') {
-            throw new Sabre_DAV_Exception_UnsupportedMediaType('This collection can only support iCalendar objects.');
-        }
-
-        $foundType = null;
-        $foundUID = null;
-        foreach($vobj->getComponents() as $component) {
-            switch($component->name) {
-                case 'VTIMEZONE' :
-                    continue 2;
-                case 'VEVENT' :
-                case 'VTODO' :
-                case 'VJOURNAL' :
-                    if (is_null($foundType)) {
-                        $foundType = $component->name;
-                        if (!isset($component->UID)) {
-                            throw new Sabre_DAV_Exception_BadRequest('Every ' . $component->name . ' component must have an UID');
-                        }
-                        $foundUID = (string)$component->UID;
-                    } else {
-                        if ($foundType !== $component->name) {
-                            throw new Sabre_DAV_Exception_BadRequest('A calendar object must only contain 1 component. We found a ' . $component->name . ' as well as a ' . $foundType);
-                        }
-                        if ($foundUID !== (string)$component->UID) {
-                            throw new Sabre_DAV_Exception_BadRequest('Every ' . $component->name . ' in this object must have identical UIDs');
-                        }
-                    }
-                    break;
-                default :
-                    throw new Sabre_DAV_Exception_BadRequest('You are not allowed to create components of type: ' . $component->name . ' here');
-
-            }
-        }
-        if (!$foundType)
-            throw new Sabre_DAV_Exception_BadRequest('iCalendar object must contain at least 1 of VEVENT, VTODO or VJOURNAL');
-
-    }
-
-    /**
-     * This method handles POST requests to the schedule-outbox
-     *
-     * @param Sabre_CalDAV_Schedule_IOutbox $outboxNode
-     * @return void
-     */
-    public function outboxRequest(Sabre_CalDAV_Schedule_IOutbox $outboxNode) {
-
-        $originator = $this->server->httpRequest->getHeader('Originator');
-        $recipients = $this->server->httpRequest->getHeader('Recipient');
-
-        if (!$originator) {
-            throw new Sabre_DAV_Exception_BadRequest('The Originator: header must be specified when making POST requests');
-        } 
-        if (!$recipients) {
-            throw new Sabre_DAV_Exception_BadRequest('The Recipient: header must be specified when making POST requests');
-        } 
-
-        if (!preg_match('/^mailto:(.*)@(.*)$/', $originator)) {
-            throw new Sabre_DAV_Exception_BadRequest('Originator must start with mailto: and must be valid email address');
-        }
-        $originator = substr($originator,7);
-
-        $recipients = explode(',',$recipients);
-        foreach($recipients as $k=>$recipient) {
-
-            $recipient = trim($recipient);
-            if (!preg_match('/^mailto:(.*)@(.*)$/', $recipient)) { 
-                throw new Sabre_DAV_Exception_BadRequest('Recipients must start with mailto: and must be valid email address');
-            }
-            $recipient = substr($recipient, 7);
-            $recipients[$k] = $recipient;
-        }
-
-        // We need to make sure that 'originator' matches one of the email 
-        // addresses of the selected principal.
-        $principal = $outboxNode->getOwner();
-        $props = $this->server->getProperties($principal,array(
-            '{' . self::NS_CALDAV . '}calendar-user-address-set',
-        ));
-
-        $addresses = array();
-        if (isset($props['{' . self::NS_CALDAV . '}calendar-user-address-set'])) {
-            $addresses = $props['{' . self::NS_CALDAV . '}calendar-user-address-set']->getHrefs();
-        }
-
-        if (!in_array('mailto:' . $originator, $addresses)) {
-            throw new Sabre_DAV_Exception_Forbidden('The addresses specified in the Originator header did not match any addresses in the owners calendar-user-address-set header');
-        }
-
-        try { 
-            $vObject = Sabre_VObject_Reader::read($this->server->httpRequest->getBody(true));
-        } catch (Sabre_VObject_ParseException $e) {
-            throw new Sabre_DAV_Exception_BadRequest('The request body must be a valid iCalendar object. Parse error: ' . $e->getMessage());
-        }
-
-        // Checking for the object type
-        $componentType = null;
-        foreach($vObject->getComponents() as $component) {
-            if ($component->name !== 'VTIMEZONE') {
-                $componentType = $component->name;
-                break;
-            }
-        }
-        if (is_null($componentType)) {
-            throw new Sabre_DAV_Exception_BadRequest('We expected at least one VTODO, VJOURNAL, VFREEBUSY or VEVENT component');
-        }
-
-        // Validating the METHOD
-        $method = strtoupper((string)$vObject->METHOD);
-        if (!$method) {
-            throw new Sabre_DAV_Exception_BadRequest('A METHOD property must be specified in iTIP messages');
-        }
-
-        if (in_array($method, array('REQUEST','REPLY','ADD','CANCEL')) && $componentType==='VEVENT') {
-            $this->iMIPMessage($originator, $recipients, $vObject);
-            $this->server->httpResponse->sendStatus(200);
-            $this->server->httpResponse->sendBody('Messages sent');
-        } else {
-            throw new Sabre_DAV_Exception_NotImplemented('This iTIP method is currently not implemented');
-        }
-
-    }
-
-    /**
-     * Sends an iMIP message by email.
-     * 
-     * @param string $originator 
-     * @param array $recipients 
-     * @param Sabre_VObject_Component $vObject 
-     * @return void
-     */
-    protected function iMIPMessage($originator, array $recipients, Sabre_VObject_Component $vObject) {
-
-        if (!$this->imipHandler) {
-            throw new Sabre_DAV_Exception_NotImplemented('No iMIP handler is setup on this server.');
-        }
-        $this->imipHandler->sendMessage($originator, $recipients, $vObject); 
-
-    }
-
-    /**
-     * This method is used to generate HTML output for the
-     * Sabre_DAV_Browser_Plugin. This allows us to generate an interface users
-     * can use to create new calendars.
-     *
-     * @param Sabre_DAV_INode $node
-     * @param string $output
-     * @return bool
-     */
-    public function htmlActionsPanel(Sabre_DAV_INode $node, &$output) {
-
-        if (!$node instanceof Sabre_CalDAV_UserCalendars)
-            return;
-
-        $output.= '<tr><td colspan="2"><form method="post" action="">
-            <h3>Create new calendar</h3>
-            <input type="hidden" name="sabreAction" value="mkcalendar" />
-            <label>Name (uri):</label> <input type="text" name="name" /><br />
-            <label>Display name:</label> <input type="text" name="{DAV:}displayname" /><br />
-            <input type="submit" value="create" />
-            </form>
-            </td></tr>';
-
-        return false;
-
-    }
-
-    /**
-     * This method allows us to intercept the 'mkcalendar' sabreAction. This
-     * action enables the user to create new calendars from the browser plugin.
-     *
-     * @param string $uri
-     * @param string $action
-     * @param array $postVars
-     * @return bool
-     */
-    public function browserPostAction($uri, $action, array $postVars) {
-
-        if ($action!=='mkcalendar')
-            return;
-
-        $resourceType = array('{DAV:}collection','{urn:ietf:params:xml:ns:caldav}calendar');
-        $properties = array();
-        if (isset($postVars['{DAV:}displayname'])) {
-            $properties['{DAV:}displayname'] = $postVars['{DAV:}displayname'];
-        }
-        $this->server->createCollection($uri . '/' . $postVars['name'],$resourceType,$properties);
-        return false;
-
-    }
-
-}
diff --git a/3rdparty/Sabre/CalDAV/Principal/Collection.php b/3rdparty/Sabre/CalDAV/Principal/Collection.php
deleted file mode 100755
index abbefa5567a..00000000000
--- a/3rdparty/Sabre/CalDAV/Principal/Collection.php
+++ /dev/null
@@ -1,31 +0,0 @@
-<?php
-
-/**
- * Principal collection
- *
- * This is an alternative collection to the standard ACL principal collection.
- * This collection adds support for the calendar-proxy-read and
- * calendar-proxy-write sub-principals, as defined by the caldav-proxy
- * specification.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_Principal_Collection extends Sabre_DAVACL_AbstractPrincipalCollection {
-
-    /**
-     * Returns a child object based on principal information
-     *
-     * @param array $principalInfo
-     * @return Sabre_CalDAV_Principal_User
-     */
-    public function getChildForPrincipal(array $principalInfo) {
-
-        return new Sabre_CalDAV_Principal_User($this->principalBackend, $principalInfo);
-
-    }
-
-}
diff --git a/3rdparty/Sabre/CalDAV/Principal/ProxyRead.php b/3rdparty/Sabre/CalDAV/Principal/ProxyRead.php
deleted file mode 100755
index 4b3f035634a..00000000000
--- a/3rdparty/Sabre/CalDAV/Principal/ProxyRead.php
+++ /dev/null
@@ -1,178 +0,0 @@
-<?php
-
-/**
- * ProxyRead principal
- *
- * This class represents a principal group, hosted under the main principal.
- * This is needed to implement 'Calendar delegation' support. This class is
- * instantiated by Sabre_CalDAV_Principal_User.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_Principal_ProxyRead implements Sabre_DAVACL_IPrincipal {
-
-    /**
-     * Principal information from the parent principal.
-     *
-     * @var array
-     */
-    protected $principalInfo;
-
-    /**
-     * Principal backend
-     *
-     * @var Sabre_DAVACL_IPrincipalBackend
-     */
-    protected $principalBackend;
-
-    /**
-     * Creates the object.
-     *
-     * Note that you MUST supply the parent principal information.
-     *
-     * @param Sabre_DAVACL_IPrincipalBackend $principalBackend
-     * @param array $principalInfo
-     */
-    public function __construct(Sabre_DAVACL_IPrincipalBackend $principalBackend, array $principalInfo) {
-
-        $this->principalInfo = $principalInfo;
-        $this->principalBackend = $principalBackend;
-
-    }
-
-    /**
-     * Returns this principals name.
-     *
-     * @return string
-     */
-    public function getName() {
-
-        return 'calendar-proxy-read';
-
-    }
-
-    /**
-     * Returns the last modification time
-     *
-     * @return null
-     */
-    public function getLastModified() {
-
-        return null;
-
-    }
-
-    /**
-     * Deletes the current node
-     *
-     * @throws Sabre_DAV_Exception_Forbidden
-     * @return void
-     */
-    public function delete() {
-
-        throw new Sabre_DAV_Exception_Forbidden('Permission denied to delete node');
-
-    }
-
-    /**
-     * Renames the node
-     *
-     * @throws Sabre_DAV_Exception_Forbidden
-     * @param string $name The new name
-     * @return void
-     */
-    public function setName($name) {
-
-        throw new Sabre_DAV_Exception_Forbidden('Permission denied to rename file');
-
-    }
-
-
-    /**
-     * Returns a list of alternative urls for a principal
-     *
-     * This can for example be an email address, or ldap url.
-     *
-     * @return array
-     */
-    public function getAlternateUriSet() {
-
-        return array();
-
-    }
-
-    /**
-     * Returns the full principal url
-     *
-     * @return string
-     */
-    public function getPrincipalUrl() {
-
-        return $this->principalInfo['uri'] . '/' . $this->getName();
-
-    }
-
-    /**
-     * Returns the list of group members
-     *
-     * If this principal is a group, this function should return
-     * all member principal uri's for the group.
-     *
-     * @return array
-     */
-    public function getGroupMemberSet() {
-
-        return $this->principalBackend->getGroupMemberSet($this->getPrincipalUrl());
-
-    }
-
-    /**
-     * Returns the list of groups this principal is member of
-     *
-     * If this principal is a member of a (list of) groups, this function
-     * should return a list of principal uri's for it's members.
-     *
-     * @return array
-     */
-    public function getGroupMembership() {
-
-        return $this->principalBackend->getGroupMembership($this->getPrincipalUrl());
-
-    }
-
-    /**
-     * Sets a list of group members
-     *
-     * If this principal is a group, this method sets all the group members.
-     * The list of members is always overwritten, never appended to.
-     *
-     * This method should throw an exception if the members could not be set.
-     *
-     * @param array $principals
-     * @return void
-     */
-    public function setGroupMemberSet(array $principals) {
-
-        $this->principalBackend->setGroupMemberSet($this->getPrincipalUrl(), $principals);
-
-    }
-
-    /**
-     * Returns the displayname
-     *
-     * This should be a human readable name for the principal.
-     * If none is available, return the nodename.
-     *
-     * @return string
-     */
-    public function getDisplayName() {
-
-        return $this->getName();
-
-    }
-
-}
diff --git a/3rdparty/Sabre/CalDAV/Principal/ProxyWrite.php b/3rdparty/Sabre/CalDAV/Principal/ProxyWrite.php
deleted file mode 100755
index dd0c2e86edd..00000000000
--- a/3rdparty/Sabre/CalDAV/Principal/ProxyWrite.php
+++ /dev/null
@@ -1,178 +0,0 @@
-<?php
-
-/**
- * ProxyWrite principal
- *
- * This class represents a principal group, hosted under the main principal.
- * This is needed to implement 'Calendar delegation' support. This class is
- * instantiated by Sabre_CalDAV_Principal_User.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_Principal_ProxyWrite implements Sabre_DAVACL_IPrincipal {
-
-    /**
-     * Parent principal information
-     *
-     * @var array
-     */
-    protected $principalInfo;
-
-    /**
-     * Principal Backend
-     *
-     * @var Sabre_DAVACL_IPrincipalBackend
-     */
-    protected $principalBackend;
-
-    /**
-     * Creates the object
-     *
-     * Note that you MUST supply the parent principal information.
-     *
-     * @param Sabre_DAVACL_IPrincipalBackend $principalBackend
-     * @param array $principalInfo
-     */
-    public function __construct(Sabre_DAVACL_IPrincipalBackend $principalBackend, array $principalInfo) {
-
-        $this->principalInfo = $principalInfo;
-        $this->principalBackend = $principalBackend;
-
-    }
-
-    /**
-     * Returns this principals name.
-     *
-     * @return string
-     */
-    public function getName() {
-
-        return 'calendar-proxy-write';
-
-    }
-
-    /**
-     * Returns the last modification time
-     *
-     * @return null
-     */
-    public function getLastModified() {
-
-        return null;
-
-    }
-
-    /**
-     * Deletes the current node
-     *
-     * @throws Sabre_DAV_Exception_Forbidden
-     * @return void
-     */
-    public function delete() {
-
-        throw new Sabre_DAV_Exception_Forbidden('Permission denied to delete node');
-
-    }
-
-    /**
-     * Renames the node
-     *
-     * @throws Sabre_DAV_Exception_Forbidden
-     * @param string $name The new name
-     * @return void
-     */
-    public function setName($name) {
-
-        throw new Sabre_DAV_Exception_Forbidden('Permission denied to rename file');
-
-    }
-
-
-    /**
-     * Returns a list of alternative urls for a principal
-     *
-     * This can for example be an email address, or ldap url.
-     *
-     * @return array
-     */
-    public function getAlternateUriSet() {
-
-        return array();
-
-    }
-
-    /**
-     * Returns the full principal url
-     *
-     * @return string
-     */
-    public function getPrincipalUrl() {
-
-        return $this->principalInfo['uri'] . '/' . $this->getName();
-
-    }
-
-    /**
-     * Returns the list of group members
-     *
-     * If this principal is a group, this function should return
-     * all member principal uri's for the group.
-     *
-     * @return array
-     */
-    public function getGroupMemberSet() {
-
-        return $this->principalBackend->getGroupMemberSet($this->getPrincipalUrl());
-
-    }
-
-    /**
-     * Returns the list of groups this principal is member of
-     *
-     * If this principal is a member of a (list of) groups, this function
-     * should return a list of principal uri's for it's members.
-     *
-     * @return array
-     */
-    public function getGroupMembership() {
-
-        return $this->principalBackend->getGroupMembership($this->getPrincipalUrl());
-
-    }
-
-    /**
-     * Sets a list of group members
-     *
-     * If this principal is a group, this method sets all the group members.
-     * The list of members is always overwritten, never appended to.
-     *
-     * This method should throw an exception if the members could not be set.
-     *
-     * @param array $principals
-     * @return void
-     */
-    public function setGroupMemberSet(array $principals) {
-
-        $this->principalBackend->setGroupMemberSet($this->getPrincipalUrl(), $principals);
-
-    }
-
-    /**
-     * Returns the displayname
-     *
-     * This should be a human readable name for the principal.
-     * If none is available, return the nodename.
-     *
-     * @return string
-     */
-    public function getDisplayName() {
-
-        return $this->getName();
-
-    }
-
-}
diff --git a/3rdparty/Sabre/CalDAV/Principal/User.php b/3rdparty/Sabre/CalDAV/Principal/User.php
deleted file mode 100755
index 8453b877a73..00000000000
--- a/3rdparty/Sabre/CalDAV/Principal/User.php
+++ /dev/null
@@ -1,132 +0,0 @@
-<?php
-
-/**
- * CalDAV principal
- *
- * This is a standard user-principal for CalDAV. This principal is also a
- * collection and returns the caldav-proxy-read and caldav-proxy-write child
- * principals.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_Principal_User extends Sabre_DAVACL_Principal implements Sabre_DAV_ICollection {
-
-    /**
-     * Creates a new file in the directory
-     *
-     * @param string $name Name of the file
-     * @param resource $data Initial payload, passed as a readable stream resource.
-     * @throws Sabre_DAV_Exception_Forbidden
-     * @return void
-     */
-    public function createFile($name, $data = null) {
-
-        throw new Sabre_DAV_Exception_Forbidden('Permission denied to create file (filename ' . $name . ')');
-
-    }
-
-    /**
-     * Creates a new subdirectory
-     *
-     * @param string $name
-     * @throws Sabre_DAV_Exception_Forbidden
-     * @return void
-     */
-    public function createDirectory($name) {
-
-        throw new Sabre_DAV_Exception_Forbidden('Permission denied to create directory');
-
-    }
-
-    /**
-     * Returns a specific child node, referenced by its name
-     *
-     * @param string $name
-     * @return Sabre_DAV_INode
-     */
-    public function getChild($name) {
-
-        $principal = $this->principalBackend->getPrincipalByPath($this->getPrincipalURL() . '/' . $name);
-        if (!$principal) {
-            throw new Sabre_DAV_Exception_NotFound('Node with name ' . $name . ' was not found');
-        }
-        if ($name === 'calendar-proxy-read')
-            return new Sabre_CalDAV_Principal_ProxyRead($this->principalBackend, $this->principalProperties);
-
-        if ($name === 'calendar-proxy-write')
-            return new Sabre_CalDAV_Principal_ProxyWrite($this->principalBackend, $this->principalProperties);
-
-        throw new Sabre_DAV_Exception_NotFound('Node with name ' . $name . ' was not found');
-
-    }
-
-    /**
-     * Returns an array with all the child nodes
-     *
-     * @return Sabre_DAV_INode[]
-     */
-    public function getChildren() {
-
-        $r = array();
-        if ($this->principalBackend->getPrincipalByPath($this->getPrincipalURL() . '/calendar-proxy-read')) {
-            $r[] = new Sabre_CalDAV_Principal_ProxyRead($this->principalBackend, $this->principalProperties);
-        }
-        if ($this->principalBackend->getPrincipalByPath($this->getPrincipalURL() . '/calendar-proxy-write')) {
-            $r[] = new Sabre_CalDAV_Principal_ProxyWrite($this->principalBackend, $this->principalProperties);
-        }
-
-        return $r;
-
-    }
-
-    /**
-     * Returns whether or not the child node exists
-     *
-     * @param string $name
-     * @return bool
-     */
-    public function childExists($name) {
-
-        try {
-            $this->getChild($name);
-            return true;
-        } catch (Sabre_DAV_Exception_NotFound $e) {
-            return false;
-        }
-
-    }
-
-    /**
-     * Returns a list of ACE's for this node.
-     *
-     * Each ACE has the following properties:
-     *   * 'privilege', a string such as {DAV:}read or {DAV:}write. These are
-     *     currently the only supported privileges
-     *   * 'principal', a url to the principal who owns the node
-     *   * 'protected' (optional), indicating that this ACE is not allowed to
-     *      be updated.
-     *
-     * @return array
-     */
-    public function getACL() {
-
-        $acl = parent::getACL();
-        $acl[] = array(
-            'privilege' => '{DAV:}read',
-            'principal' => $this->principalProperties['uri'] . '/calendar-proxy-read',
-            'protected' => true,
-        );
-        $acl[] = array(
-            'privilege' => '{DAV:}read',
-            'principal' => $this->principalProperties['uri'] . '/calendar-proxy-write',
-            'protected' => true,
-        );
-        return $acl;
-
-    }
-
-}
diff --git a/3rdparty/Sabre/CalDAV/Property/SupportedCalendarComponentSet.php b/3rdparty/Sabre/CalDAV/Property/SupportedCalendarComponentSet.php
deleted file mode 100755
index 2ea078d7dac..00000000000
--- a/3rdparty/Sabre/CalDAV/Property/SupportedCalendarComponentSet.php
+++ /dev/null
@@ -1,85 +0,0 @@
-<?php
-
-/**
- * Supported component set property
- *
- * This property is a representation of the supported-calendar_component-set
- * property in the CalDAV namespace. It simply requires an array of components,
- * such as VEVENT, VTODO
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_Property_SupportedCalendarComponentSet extends Sabre_DAV_Property {
-
-    /**
-     * List of supported components, such as "VEVENT, VTODO"
-     *
-     * @var array
-     */
-    private $components;
-
-    /**
-     * Creates the property
-     *
-     * @param array $components
-     */
-    public function __construct(array $components) {
-
-       $this->components = $components;
-
-    }
-
-    /**
-     * Returns the list of supported components
-     *
-     * @return array
-     */
-    public function getValue() {
-
-        return $this->components;
-
-    }
-
-    /**
-     * Serializes the property in a DOMDocument
-     *
-     * @param Sabre_DAV_Server $server
-     * @param DOMElement $node
-     * @return void
-     */
-    public function serialize(Sabre_DAV_Server $server,DOMElement $node) {
-
-       $doc = $node->ownerDocument;
-       foreach($this->components as $component) {
-
-            $xcomp = $doc->createElement('cal:comp');
-            $xcomp->setAttribute('name',$component);
-            $node->appendChild($xcomp);
-
-       }
-
-    }
-
-    /**
-     * Unserializes the DOMElement back into a Property class.
-     *
-     * @param DOMElement $node
-     * @return Sabre_CalDAV_Property_SupportedCalendarComponentSet
-     */
-    static function unserialize(DOMElement $node) {
-
-        $components = array();
-        foreach($node->childNodes as $childNode) {
-            if (Sabre_DAV_XMLUtil::toClarkNotation($childNode)==='{' . Sabre_CalDAV_Plugin::NS_CALDAV . '}comp') {
-                $components[] = $childNode->getAttribute('name');
-            }
-        }
-        return new self($components);
-
-    }
-
-}
diff --git a/3rdparty/Sabre/CalDAV/Property/SupportedCalendarData.php b/3rdparty/Sabre/CalDAV/Property/SupportedCalendarData.php
deleted file mode 100755
index 1d848dd5cf6..00000000000
--- a/3rdparty/Sabre/CalDAV/Property/SupportedCalendarData.php
+++ /dev/null
@@ -1,38 +0,0 @@
-<?php
-
-/**
- * Supported-calendar-data property
- *
- * This property is a representation of the supported-calendar-data property
- * in the CalDAV namespace. SabreDAV only has support for text/calendar;2.0
- * so the value is currently hardcoded.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_Property_SupportedCalendarData extends Sabre_DAV_Property {
-
-    /**
-     * Serializes the property in a DOMDocument
-     *
-     * @param Sabre_DAV_Server $server
-     * @param DOMElement $node
-     * @return void
-     */
-    public function serialize(Sabre_DAV_Server $server,DOMElement $node) {
-
-        $doc = $node->ownerDocument;
-
-        $prefix = isset($server->xmlNamespaces[Sabre_CalDAV_Plugin::NS_CALDAV])?$server->xmlNamespaces[Sabre_CalDAV_Plugin::NS_CALDAV]:'cal';
-
-        $caldata = $doc->createElement($prefix . ':calendar-data');
-        $caldata->setAttribute('content-type','text/calendar');
-        $caldata->setAttribute('version','2.0');
-
-        $node->appendChild($caldata);
-    }
-
-}
diff --git a/3rdparty/Sabre/CalDAV/Property/SupportedCollationSet.php b/3rdparty/Sabre/CalDAV/Property/SupportedCollationSet.php
deleted file mode 100755
index 24e84d4c17d..00000000000
--- a/3rdparty/Sabre/CalDAV/Property/SupportedCollationSet.php
+++ /dev/null
@@ -1,44 +0,0 @@
-<?php
-
-/**
- * supported-collation-set property
- *
- * This property is a representation of the supported-collation-set property
- * in the CalDAV namespace.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_Property_SupportedCollationSet extends Sabre_DAV_Property {
-
-    /**
-     * Serializes the property in a DOM document
-     *
-     * @param Sabre_DAV_Server $server
-     * @param DOMElement $node
-     * @return void
-     */
-    public function serialize(Sabre_DAV_Server $server,DOMElement $node) {
-
-        $doc = $node->ownerDocument;
-
-        $prefix = $node->lookupPrefix('urn:ietf:params:xml:ns:caldav');
-        if (!$prefix) $prefix = 'cal';
-
-        $node->appendChild(
-            $doc->createElement($prefix . ':supported-collation','i;ascii-casemap')
-        );
-        $node->appendChild(
-            $doc->createElement($prefix . ':supported-collation','i;octet')
-        );
-        $node->appendChild(
-            $doc->createElement($prefix . ':supported-collation','i;unicode-casemap')
-        );
-
-
-    }
-
-}
diff --git a/3rdparty/Sabre/CalDAV/Schedule/IMip.php b/3rdparty/Sabre/CalDAV/Schedule/IMip.php
deleted file mode 100755
index 37e75fcc4a7..00000000000
--- a/3rdparty/Sabre/CalDAV/Schedule/IMip.php
+++ /dev/null
@@ -1,104 +0,0 @@
-<?php
-
-/**
- * iMIP handler.
- *
- * This class is responsible for sending out iMIP messages. iMIP is the
- * email-based transport for iTIP. iTIP deals with scheduling operations for
- * iCalendar objects.
- *
- * If you want to customize the email that gets sent out, you can do so by
- * extending this class and overriding the sendMessage method.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/)
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_Schedule_IMip {
-
-    /**
-     * Email address used in From: header.
-     *
-     * @var string
-     */
-    protected $senderEmail;
-
-    /**
-     * Creates the email handler.
-     *
-     * @param string $senderEmail. The 'senderEmail' is the email that shows up
-     *                             in the 'From:' address. This should
-     *                             generally be some kind of no-reply email
-     *                             address you own.
-     */
-    public function __construct($senderEmail) {
-
-        $this->senderEmail = $senderEmail;
-
-    }
-
-    /**
-     * Sends one or more iTip messages through email.
-     *
-     * @param string $originator
-     * @param array $recipients
-     * @param Sabre_VObject_Component $vObject
-     * @return void
-     */
-    public function sendMessage($originator, array $recipients, Sabre_VObject_Component $vObject) {
-
-        foreach($recipients as $recipient) {
-
-            $to = $recipient;
-            $replyTo = $originator;
-            $subject = 'SabreDAV iTIP message';
-
-            switch(strtoupper($vObject->METHOD)) {
-                case 'REPLY' :
-                    $subject = 'Response for: ' . $vObject->VEVENT->SUMMARY;
-                    break;
-                case 'REQUEST' :
-                    $subject = 'Invitation for: ' .$vObject->VEVENT->SUMMARY;
-                    break;
-                case 'CANCEL' :
-                    $subject = 'Cancelled event: ' . $vObject->VEVENT->SUMMARY;
-                    break;
-            }
-
-            $headers = array();
-            $headers[] = 'Reply-To: ' . $replyTo;
-            $headers[] = 'From: ' . $this->senderEmail;
-            $headers[] = 'Content-Type: text/calendar; method=' . (string)$vObject->method . '; charset=utf-8';
-            if (Sabre_DAV_Server::$exposeVersion) {
-                $headers[] = 'X-Sabre-Version: ' . Sabre_DAV_Version::VERSION . '-' . Sabre_DAV_Version::STABILITY;
-            }
-
-            $vcalBody = $vObject->serialize();
-
-            $this->mail($to, $subject, $vcalBody, $headers);
-
-        }
-
-    }
-
-    /**
-     * This function is reponsible for sending the actual email.
-     *
-     * @param string $to Recipient email address
-     * @param string $subject Subject of the email
-     * @param string $body iCalendar body
-     * @param array $headers List of headers
-     * @return void
-     */
-    protected function mail($to, $subject, $body, array $headers) {
-
-        mail($to, $subject, $body, implode("\r\n", $headers));
-
-    }
-
-
-}
-
-?>
diff --git a/3rdparty/Sabre/CalDAV/Schedule/IOutbox.php b/3rdparty/Sabre/CalDAV/Schedule/IOutbox.php
deleted file mode 100755
index 46d77514bc0..00000000000
--- a/3rdparty/Sabre/CalDAV/Schedule/IOutbox.php
+++ /dev/null
@@ -1,16 +0,0 @@
-<?php
-
-/**
- * Implement this interface to have a node be recognized as a CalDAV scheduling
- * outbox.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/)
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-interface Sabre_CalDAV_Schedule_IOutbox extends Sabre_DAV_ICollection, Sabre_DAVACL_IACL {
-
-
-}
diff --git a/3rdparty/Sabre/CalDAV/Schedule/Outbox.php b/3rdparty/Sabre/CalDAV/Schedule/Outbox.php
deleted file mode 100755
index 014c37230d1..00000000000
--- a/3rdparty/Sabre/CalDAV/Schedule/Outbox.php
+++ /dev/null
@@ -1,152 +0,0 @@
-<?php
-
-/**
- * The CalDAV scheduling outbox
- *
- * The outbox is mainly used as an endpoint in the tree for a client to do
- * free-busy requests. This functionality is completely handled by the
- * Scheduling plugin, so this object is actually mostly static.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/)
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_Schedule_Outbox extends Sabre_DAV_Directory implements Sabre_CalDAV_Schedule_IOutbox {
-
-    /**
-     * The principal Uri
-     *
-     * @var string
-     */
-    protected $principalUri;
-
-    /**
-     * Constructor
-     *
-     * @param string $principalUri
-     */
-    public function __construct($principalUri) {
-
-        $this->principalUri = $principalUri;
-
-    }
-
-    /**
-     * Returns the name of the node.
-     *
-     * This is used to generate the url.
-     *
-     * @return string
-     */
-    public function getName() {
-
-        return 'outbox';
-
-    }
-
-    /**
-     * Returns an array with all the child nodes
-     *
-     * @return Sabre_DAV_INode[]
-     */
-    public function getChildren() {
-
-        return array();
-
-    }
-
-    /**
-     * Returns the owner principal
-     *
-     * This must be a url to a principal, or null if there's no owner
-     *
-     * @return string|null
-     */
-    public function getOwner() {
-
-        return $this->principalUri;
-
-    }
-
-    /**
-     * Returns a group principal
-     *
-     * This must be a url to a principal, or null if there's no owner
-     *
-     * @return string|null
-     */
-    public function getGroup() {
-
-        return null;
-
-    }
-
-    /**
-     * Returns a list of ACE's for this node.
-     *
-     * Each ACE has the following properties:
-     *   * 'privilege', a string such as {DAV:}read or {DAV:}write. These are
-     *     currently the only supported privileges
-     *   * 'principal', a url to the principal who owns the node
-     *   * 'protected' (optional), indicating that this ACE is not allowed to
-     *      be updated.
-     *
-     * @return array
-     */
-    public function getACL() {
-
-        return array(
-            array(
-                'privilege' => '{' . Sabre_CalDAV_Plugin::NS_CALDAV . '}schedule-query-freebusy',
-                'principal' => $this->getOwner(),
-                'protected' => true,
-            ),
-            array(
-                'privilege' => '{DAV:}read',
-                'principal' => $this->getOwner(),
-                'protected' => true,
-            ),
-        );
-
-    }
-
-    /**
-     * Updates the ACL
-     *
-     * This method will receive a list of new ACE's.
-     *
-     * @param array $acl
-     * @return void
-     */
-    public function setACL(array $acl) {
-
-        throw new Sabre_DAV_Exception_MethodNotAllowed('You\'re not allowed to update the ACL');
-
-    }
-
-    /**
-     * Returns the list of supported privileges for this node.
-     *
-     * The returned data structure is a list of nested privileges.
-     * See Sabre_DAVACL_Plugin::getDefaultSupportedPrivilegeSet for a simple
-     * standard structure.
-     *
-     * If null is returned from this method, the default privilege set is used,
-     * which is fine for most common usecases.
-     *
-     * @return array|null
-     */
-    public function getSupportedPrivilegeSet() {
-
-        $default = Sabre_DAVACL_Plugin::getDefaultSupportedPrivilegeSet();
-        $default['aggregates'][] = array(
-            'privilege' => '{' . Sabre_CalDAV_Plugin::NS_CALDAV . '}schedule-query-freebusy',
-        );
-
-        return $default;
-
-    }
-
-}
diff --git a/3rdparty/Sabre/CalDAV/Server.php b/3rdparty/Sabre/CalDAV/Server.php
deleted file mode 100755
index 325e3d80a7f..00000000000
--- a/3rdparty/Sabre/CalDAV/Server.php
+++ /dev/null
@@ -1,68 +0,0 @@
-<?php
-
-/**
- * CalDAV server
- *
- * Deprecated! Warning: This class is now officially deprecated
- *
- * This script is a convenience script. It quickly sets up a WebDAV server
- * with caldav and ACL support, and it creates the root 'principals' and
- * 'calendars' collections.
- *
- * Note that if you plan to do anything moderately complex, you are advised to
- * not subclass this server, but use Sabre_DAV_Server directly instead. This
- * class is nothing more than an 'easy setup'.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @deprecated Don't use this class anymore, it will be removed in version 1.7.
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_Server extends Sabre_DAV_Server {
-
-    /**
-     * The authentication realm
-     *
-     * Note that if this changes, the hashes in the auth backend must also
-     * be recalculated.
-     *
-     * @var string
-     */
-    public $authRealm = 'SabreDAV';
-
-    /**
-     * Sets up the object. A PDO object must be passed to setup all the backends.
-     *
-     * @param PDO $pdo
-     */
-    public function __construct(PDO $pdo) {
-
-        /* Backends */
-        $authBackend = new Sabre_DAV_Auth_Backend_PDO($pdo);
-        $calendarBackend = new Sabre_CalDAV_Backend_PDO($pdo);
-        $principalBackend = new Sabre_DAVACL_PrincipalBackend_PDO($pdo);
-
-        /* Directory structure */
-        $tree = array(
-            new Sabre_CalDAV_Principal_Collection($principalBackend),
-            new Sabre_CalDAV_CalendarRootNode($principalBackend, $calendarBackend),
-        );
-
-        /* Initializing server */
-        parent::__construct($tree);
-
-        /* Server Plugins */
-        $authPlugin = new Sabre_DAV_Auth_Plugin($authBackend,$this->authRealm);
-        $this->addPlugin($authPlugin);
-
-        $aclPlugin = new Sabre_DAVACL_Plugin();
-        $this->addPlugin($aclPlugin);
-
-        $caldavPlugin = new Sabre_CalDAV_Plugin();
-        $this->addPlugin($caldavPlugin);
-
-    }
-
-}
diff --git a/3rdparty/Sabre/CalDAV/UserCalendars.php b/3rdparty/Sabre/CalDAV/UserCalendars.php
deleted file mode 100755
index b8d3f0573fa..00000000000
--- a/3rdparty/Sabre/CalDAV/UserCalendars.php
+++ /dev/null
@@ -1,298 +0,0 @@
-<?php
-
-/**
- * The UserCalenders class contains all calendars associated to one user
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_UserCalendars implements Sabre_DAV_IExtendedCollection, Sabre_DAVACL_IACL {
-
-    /**
-     * Principal backend
-     *
-     * @var Sabre_DAVACL_IPrincipalBackend
-     */
-    protected $principalBackend;
-
-    /**
-     * CalDAV backend
-     *
-     * @var Sabre_CalDAV_Backend_Abstract
-     */
-    protected $caldavBackend;
-
-    /**
-     * Principal information
-     *
-     * @var array
-     */
-    protected $principalInfo;
-
-    /**
-     * Constructor
-     *
-     * @param Sabre_DAVACL_IPrincipalBackend $principalBackend
-     * @param Sabre_CalDAV_Backend_Abstract $caldavBackend
-     * @param mixed $userUri
-     */
-    public function __construct(Sabre_DAVACL_IPrincipalBackend $principalBackend, Sabre_CalDAV_Backend_Abstract $caldavBackend, $userUri) {
-
-        $this->principalBackend = $principalBackend;
-        $this->caldavBackend = $caldavBackend;
-        $this->principalInfo = $principalBackend->getPrincipalByPath($userUri);
-
-    }
-
-    /**
-     * Returns the name of this object
-     *
-     * @return string
-     */
-    public function getName() {
-
-        list(,$name) = Sabre_DAV_URLUtil::splitPath($this->principalInfo['uri']);
-        return $name;
-
-    }
-
-    /**
-     * Updates the name of this object
-     *
-     * @param string $name
-     * @return void
-     */
-    public function setName($name) {
-
-        throw new Sabre_DAV_Exception_Forbidden();
-
-    }
-
-    /**
-     * Deletes this object
-     *
-     * @return void
-     */
-    public function delete() {
-
-        throw new Sabre_DAV_Exception_Forbidden();
-
-    }
-
-    /**
-     * Returns the last modification date
-     *
-     * @return int
-     */
-    public function getLastModified() {
-
-        return null;
-
-    }
-
-    /**
-     * Creates a new file under this object.
-     *
-     * This is currently not allowed
-     *
-     * @param string $filename
-     * @param resource $data
-     * @return void
-     */
-    public function createFile($filename, $data=null) {
-
-        throw new Sabre_DAV_Exception_MethodNotAllowed('Creating new files in this collection is not supported');
-
-    }
-
-    /**
-     * Creates a new directory under this object.
-     *
-     * This is currently not allowed.
-     *
-     * @param string $filename
-     * @return void
-     */
-    public function createDirectory($filename) {
-
-        throw new Sabre_DAV_Exception_MethodNotAllowed('Creating new collections in this collection is not supported');
-
-    }
-
-    /**
-     * Returns a single calendar, by name
-     *
-     * @param string $name
-     * @todo needs optimizing
-     * @return Sabre_CalDAV_Calendar
-     */
-    public function getChild($name) {
-
-        foreach($this->getChildren() as $child) {
-            if ($name==$child->getName())
-                return $child;
-
-        }
-        throw new Sabre_DAV_Exception_NotFound('Calendar with name \'' . $name . '\' could not be found');
-
-    }
-
-    /**
-     * Checks if a calendar exists.
-     *
-     * @param string $name
-     * @todo needs optimizing
-     * @return bool
-     */
-    public function childExists($name) {
-
-        foreach($this->getChildren() as $child) {
-            if ($name==$child->getName())
-                return true;
-
-        }
-        return false;
-
-    }
-
-    /**
-     * Returns a list of calendars
-     *
-     * @return array
-     */
-    public function getChildren() {
-
-        $calendars = $this->caldavBackend->getCalendarsForUser($this->principalInfo['uri']);
-        $objs = array();
-        foreach($calendars as $calendar) {
-            $objs[] = new Sabre_CalDAV_Calendar($this->principalBackend, $this->caldavBackend, $calendar);
-        }
-        $objs[] = new Sabre_CalDAV_Schedule_Outbox($this->principalInfo['uri']);
-        return $objs;
-
-    }
-
-    /**
-     * Creates a new calendar
-     *
-     * @param string $name
-     * @param array $resourceType
-     * @param array $properties
-     * @return void
-     */
-    public function createExtendedCollection($name, array $resourceType, array $properties) {
-
-        if (!in_array('{urn:ietf:params:xml:ns:caldav}calendar',$resourceType) || count($resourceType)!==2) {
-            throw new Sabre_DAV_Exception_InvalidResourceType('Unknown resourceType for this collection');
-        }
-        $this->caldavBackend->createCalendar($this->principalInfo['uri'], $name, $properties);
-
-    }
-
-    /**
-     * Returns the owner principal
-     *
-     * This must be a url to a principal, or null if there's no owner
-     *
-     * @return string|null
-     */
-    public function getOwner() {
-
-        return $this->principalInfo['uri'];
-
-    }
-
-    /**
-     * Returns a group principal
-     *
-     * This must be a url to a principal, or null if there's no owner
-     *
-     * @return string|null
-     */
-    public function getGroup() {
-
-        return null;
-
-    }
-
-    /**
-     * Returns a list of ACE's for this node.
-     *
-     * Each ACE has the following properties:
-     *   * 'privilege', a string such as {DAV:}read or {DAV:}write. These are
-     *     currently the only supported privileges
-     *   * 'principal', a url to the principal who owns the node
-     *   * 'protected' (optional), indicating that this ACE is not allowed to
-     *      be updated.
-     *
-     * @return array
-     */
-    public function getACL() {
-
-        return array(
-            array(
-                'privilege' => '{DAV:}read',
-                'principal' => $this->principalInfo['uri'],
-                'protected' => true,
-            ),
-            array(
-                'privilege' => '{DAV:}write',
-                'principal' => $this->principalInfo['uri'],
-                'protected' => true,
-            ),
-            array(
-                'privilege' => '{DAV:}read',
-                'principal' => $this->principalInfo['uri'] . '/calendar-proxy-write',
-                'protected' => true,
-            ),
-            array(
-                'privilege' => '{DAV:}write',
-                'principal' => $this->principalInfo['uri'] . '/calendar-proxy-write',
-                'protected' => true,
-            ),
-            array(
-                'privilege' => '{DAV:}read',
-                'principal' => $this->principalInfo['uri'] . '/calendar-proxy-read',
-                'protected' => true,
-            ),
-
-        );
-
-    }
-
-    /**
-     * Updates the ACL
-     *
-     * This method will receive a list of new ACE's.
-     *
-     * @param array $acl
-     * @return void
-     */
-    public function setACL(array $acl) {
-
-        throw new Sabre_DAV_Exception_MethodNotAllowed('Changing ACL is not yet supported');
-
-    }
-
-    /**
-     * Returns the list of supported privileges for this node.
-     *
-     * The returned data structure is a list of nested privileges.
-     * See Sabre_DAVACL_Plugin::getDefaultSupportedPrivilegeSet for a simple
-     * standard structure.
-     *
-     * If null is returned from this method, the default privilege set is used,
-     * which is fine for most common usecases.
-     *
-     * @return array|null
-     */
-    public function getSupportedPrivilegeSet() {
-
-        return null;
-
-    }
-
-}
diff --git a/3rdparty/Sabre/CalDAV/Version.php b/3rdparty/Sabre/CalDAV/Version.php
deleted file mode 100755
index 289a0c83a34..00000000000
--- a/3rdparty/Sabre/CalDAV/Version.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-
-/**
- * This class contains the Sabre_CalDAV version constants.
- *
- * @package Sabre
- * @subpackage CalDAV 
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/)
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-class Sabre_CalDAV_Version {
-
-    /**
-     * Full version number
-     */
-    const VERSION = '1.6.3';
-
-    /**
-     * Stability : alpha, beta, stable
-     */
-    const STABILITY = 'stable';
-
-}
diff --git a/3rdparty/Sabre/CalDAV/includes.php b/3rdparty/Sabre/CalDAV/includes.php
deleted file mode 100755
index 1ecb870a0e1..00000000000
--- a/3rdparty/Sabre/CalDAV/includes.php
+++ /dev/null
@@ -1,43 +0,0 @@
-<?php
-
-/**
- * Sabre_CalDAV includes file
- *
- * Including this file will automatically include all files from the
- * Sabre_CalDAV package.
- *
- * This often allows faster loadtimes, as autoload-speed is often quite slow.
- *
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/)
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
-
-// Begin includes
-include __DIR__ . '/Backend/Abstract.php';
-include __DIR__ . '/Backend/PDO.php';
-include __DIR__ . '/CalendarQueryParser.php';
-include __DIR__ . '/CalendarQueryValidator.php';
-include __DIR__ . '/CalendarRootNode.php';
-include __DIR__ . '/ICalendar.php';
-include __DIR__ . '/ICalendarObject.php';
-include __DIR__ . '/ICSExportPlugin.php';
-include __DIR__ . '/Plugin.php';
-include __DIR__ . '/Principal/Collection.php';
-include __DIR__ . '/Principal/ProxyRead.php';
-include __DIR__ . '/Principal/ProxyWrite.php';
-include __DIR__ . '/Principal/User.php';
-include __DIR__ . '/Property/SupportedCalendarComponentSet.php';
-include __DIR__ . '/Property/SupportedCalendarData.php';
-include __DIR__ . '/Property/SupportedCollationSet.php';
-include __DIR__ . '/Schedule/IMip.php';
-include __DIR__ . '/Schedule/IOutbox.php';
-include __DIR__ . '/Schedule/Outbox.php';
-include __DIR__ . '/Server.php';
-include __DIR__ . '/UserCalendars.php';
-include __DIR__ . '/Version.php';
-include __DIR__ . '/Calendar.php';
-include __DIR__ . '/CalendarObject.php';
-// End includes