Merge branch 'master' of git://gitorious.org/owncloud/owncloud into oracle-support

Conflicts:
	3rdparty/Sabre/CardDAV/Plugin.php
	3rdparty/smb4php/smb.php
	apps/bookmarks/ajax/addBookmark.php
	apps/bookmarks/ajax/editBookmark.php
	apps/bookmarks/appinfo/migrate.php
	apps/calendar/ajax/calendar/edit.form.php
	apps/calendar/ajax/changeview.php
	apps/calendar/ajax/import/import.php
	apps/calendar/ajax/settings/guesstimezone.php
	apps/calendar/ajax/settings/setfirstday.php
	apps/calendar/ajax/settings/settimeformat.php
	apps/calendar/ajax/share/changepermission.php
	apps/calendar/ajax/share/share.php
	apps/calendar/ajax/share/unshare.php
	apps/calendar/appinfo/app.php
	apps/calendar/appinfo/remote.php
	apps/calendar/appinfo/update.php
	apps/calendar/appinfo/version
	apps/calendar/js/calendar.js
	apps/calendar/l10n/da.php
	apps/calendar/l10n/de.php
	apps/calendar/l10n/fi_FI.php
	apps/calendar/l10n/gl.php
	apps/calendar/l10n/he.php
	apps/calendar/l10n/hr.php
	apps/calendar/l10n/ja_JP.php
	apps/calendar/l10n/lb.php
	apps/calendar/l10n/lt_LT.php
	apps/calendar/l10n/nb_NO.php
	apps/calendar/l10n/pl.php
	apps/calendar/l10n/pt_PT.php
	apps/calendar/l10n/ro.php
	apps/calendar/l10n/ru.php
	apps/calendar/l10n/sv.php
	apps/calendar/l10n/zh_CN.php
	apps/calendar/l10n/zh_TW.php
	apps/calendar/lib/app.php
	apps/calendar/lib/calendar.php
	apps/calendar/lib/object.php
	apps/calendar/lib/share.php
	apps/calendar/templates/part.choosecalendar.rowfields.php
	apps/calendar/templates/part.import.php
	apps/calendar/templates/settings.php
	apps/contacts/ajax/activation.php
	apps/contacts/ajax/addressbook/delete.php
	apps/contacts/ajax/contact/add.php
	apps/contacts/ajax/contact/addproperty.php
	apps/contacts/ajax/contact/delete.php
	apps/contacts/ajax/contact/deleteproperty.php
	apps/contacts/ajax/contact/saveproperty.php
	apps/contacts/ajax/createaddressbook.php
	apps/contacts/ajax/cropphoto.php
	apps/contacts/ajax/currentphoto.php
	apps/contacts/ajax/importaddressbook.php
	apps/contacts/ajax/oc_photo.php
	apps/contacts/ajax/savecrop.php
	apps/contacts/ajax/selectaddressbook.php
	apps/contacts/ajax/updateaddressbook.php
	apps/contacts/ajax/uploadimport.php
	apps/contacts/ajax/uploadphoto.php
	apps/contacts/appinfo/migrate.php
	apps/contacts/appinfo/remote.php
	apps/contacts/css/contacts.css
	apps/contacts/import.php
	apps/contacts/index.php
	apps/contacts/js/contacts.js
	apps/contacts/l10n/ca.php
	apps/contacts/l10n/cs_CZ.php
	apps/contacts/l10n/da.php
	apps/contacts/l10n/de.php
	apps/contacts/l10n/el.php
	apps/contacts/l10n/eo.php
	apps/contacts/l10n/es.php
	apps/contacts/l10n/et_EE.php
	apps/contacts/l10n/eu.php
	apps/contacts/l10n/fa.php
	apps/contacts/l10n/fi_FI.php
	apps/contacts/l10n/fr.php
	apps/contacts/l10n/he.php
	apps/contacts/l10n/hr.php
	apps/contacts/l10n/hu_HU.php
	apps/contacts/l10n/ia.php
	apps/contacts/l10n/it.php
	apps/contacts/l10n/ja_JP.php
	apps/contacts/l10n/ko.php
	apps/contacts/l10n/lb.php
	apps/contacts/l10n/mk.php
	apps/contacts/l10n/nb_NO.php
	apps/contacts/l10n/nl.php
	apps/contacts/l10n/pl.php
	apps/contacts/l10n/pt_BR.php
	apps/contacts/l10n/pt_PT.php
	apps/contacts/l10n/ro.php
	apps/contacts/l10n/ru.php
	apps/contacts/l10n/sk_SK.php
	apps/contacts/l10n/sl.php
	apps/contacts/l10n/sv.php
	apps/contacts/l10n/th_TH.php
	apps/contacts/l10n/tr.php
	apps/contacts/l10n/zh_CN.php
	apps/contacts/l10n/zh_TW.php
	apps/contacts/lib/addressbook.php
	apps/contacts/lib/hooks.php
	apps/contacts/lib/vcard.php
	apps/contacts/photo.php
	apps/contacts/templates/part.contact.php
	apps/contacts/templates/part.contacts.php
	apps/contacts/templates/part.cropphoto.php
	apps/contacts/templates/part.importaddressbook.php
	apps/contacts/templates/part.selectaddressbook.php
	apps/contacts/thumbnail.php
	apps/files/ajax/download.php
	apps/files/ajax/newfile.php
	apps/files/ajax/timezone.php
	apps/files/appinfo/update.php
	apps/files/appinfo/version
	apps/files/index.php
	apps/files/js/fileactions.js
	apps/files/js/filelist.js
	apps/files/js/files.js
	apps/files/l10n/ar.php
	apps/files/l10n/bg_BG.php
	apps/files/l10n/ca.php
	apps/files/l10n/cs_CZ.php
	apps/files/l10n/da.php
	apps/files/l10n/de.php
	apps/files/l10n/el.php
	apps/files/l10n/eo.php
	apps/files/l10n/es.php
	apps/files/l10n/et_EE.php
	apps/files/l10n/eu.php
	apps/files/l10n/fa.php
	apps/files/l10n/fi_FI.php
	apps/files/l10n/fr.php
	apps/files/l10n/gl.php
	apps/files/l10n/he.php
	apps/files/l10n/hr.php
	apps/files/l10n/hu_HU.php
	apps/files/l10n/ia.php
	apps/files/l10n/id.php
	apps/files/l10n/it.php
	apps/files/l10n/ja_JP.php
	apps/files/l10n/ko.php
	apps/files/l10n/lb.php
	apps/files/l10n/lt_LT.php
	apps/files/l10n/mk.php
	apps/files/l10n/ms_MY.php
	apps/files/l10n/nb_NO.php
	apps/files/l10n/nl.php
	apps/files/l10n/nn_NO.php
	apps/files/l10n/pl.php
	apps/files/l10n/pt_BR.php
	apps/files/l10n/pt_PT.php
	apps/files/l10n/ro.php
	apps/files/l10n/ru.php
	apps/files/l10n/sk_SK.php
	apps/files/l10n/sl.php
	apps/files/l10n/sr.php
	apps/files/l10n/sr@latin.php
	apps/files/l10n/sv.php
	apps/files/l10n/th_TH.php
	apps/files/l10n/tr.php
	apps/files/l10n/uk.php
	apps/files/l10n/zh_CN.php
	apps/files/l10n/zh_TW.php
	apps/files_archive/js/archive.js
	apps/files_encryption/lib/cryptstream.php
	apps/files_encryption/lib/proxy.php
	apps/files_encryption/tests/proxy.php
	apps/files_external/appinfo/app.php
	apps/files_external/lib/smb.php
	apps/files_external/lib/streamwrapper.php
	apps/files_external/tests/config.php
	apps/files_external/tests/smb.php
	apps/files_sharing/ajax/email.php
	apps/files_sharing/ajax/getitem.php
	apps/files_sharing/ajax/setpermissions.php
	apps/files_sharing/ajax/share.php
	apps/files_sharing/ajax/toggleresharing.php
	apps/files_sharing/ajax/unshare.php
	apps/files_sharing/ajax/userautocomplete.php
	apps/files_sharing/js/settings.js
	apps/files_sharing/js/share.js
	apps/files_sharing/lib_share.php
	apps/files_sharing/settings.php
	apps/files_sharing/sharedstorage.php
	apps/files_sharing/templates/settings.php
	apps/files_versions/ajax/rollbackVersion.php
	apps/files_versions/versions.php
	apps/gallery/ajax/thumbnail.php
	apps/gallery/appinfo/app.php
	apps/gallery/appinfo/update.php
	apps/gallery/appinfo/version
	apps/gallery/css/styles.css
	apps/gallery/index.php
	apps/gallery/js/pictures.js
	apps/gallery/l10n/ca.php
	apps/gallery/l10n/cs_CZ.php
	apps/gallery/l10n/de.php
	apps/gallery/l10n/el.php
	apps/gallery/l10n/es.php
	apps/gallery/l10n/fi_FI.php
	apps/gallery/l10n/fr.php
	apps/gallery/l10n/it.php
	apps/gallery/l10n/pl.php
	apps/gallery/l10n/pt_PT.php
	apps/gallery/l10n/ru.php
	apps/gallery/l10n/sl.php
	apps/gallery/l10n/sv.php
	apps/gallery/l10n/th_TH.php
	apps/gallery/l10n/tr.php
	apps/gallery/l10n/zh_CN.php
	apps/gallery/lib/album.php
	apps/gallery/lib/hooks_handlers.php
	apps/gallery/lib/managers.php
	apps/gallery/lib/photo.php
	apps/gallery/lib/tiles.php
	apps/gallery/lib/tiles_test.php
	apps/gallery/templates/index.php
	apps/media/lib_ampache.php
	apps/media/lib_collection.php
	apps/media/lib_media.php
	apps/remoteStorage/lib_remoteStorage.php
	apps/tasks/ajax/addtaskform.php
	apps/tasks/ajax/edittask.php
	apps/user_ldap/appinfo/update.php
	apps/user_ldap/group_ldap.php
	apps/user_ldap/lib_ldap.php
	apps/user_ldap/settings.php
	apps/user_ldap/templates/settings.php
	apps/user_ldap/user_ldap.php
	apps/user_migrate/appinfo/app.php
	apps/user_migrate/templates/settings.php
	apps/user_webfinger/host-meta.php
	config/config.sample.php
	core/js/js.js
	core/l10n/da.php
	core/l10n/de.php
	core/l10n/fi_FI.php
	core/l10n/gl.php
	core/l10n/he.php
	core/l10n/hr.php
	core/l10n/id.php
	core/l10n/ja_JP.php
	core/l10n/lb.php
	core/l10n/lt_LT.php
	core/l10n/nb_NO.php
	core/l10n/pl.php
	core/l10n/pt_PT.php
	core/l10n/ro.php
	core/l10n/ru.php
	core/l10n/sv.php
	core/lostpassword/index.php
	core/templates/layout.user.php
	core/templates/login.php
	db_structure.xml
	index.php
	l10n/af/calendar.po
	l10n/af/contacts.po
	l10n/af/core.po
	l10n/af/files.po
	l10n/af/settings.po
	l10n/ar/calendar.po
	l10n/ar/contacts.po
	l10n/ar/core.po
	l10n/ar/files.po
	l10n/ar/media.po
	l10n/ar/settings.po
	l10n/bg_BG/calendar.po
	l10n/bg_BG/contacts.po
	l10n/bg_BG/core.po
	l10n/bg_BG/files.po
	l10n/bg_BG/media.po
	l10n/bg_BG/settings.po
	l10n/ca/calendar.po
	l10n/ca/contacts.po
	l10n/ca/core.po
	l10n/ca/files.po
	l10n/ca/gallery.po
	l10n/ca/settings.po
	l10n/cs_CZ/calendar.po
	l10n/cs_CZ/contacts.po
	l10n/cs_CZ/core.po
	l10n/cs_CZ/files.po
	l10n/cs_CZ/gallery.po
	l10n/cs_CZ/settings.po
	l10n/da/calendar.po
	l10n/da/contacts.po
	l10n/da/core.po
	l10n/da/files.po
	l10n/da/settings.po
	l10n/de/calendar.po
	l10n/de/contacts.po
	l10n/de/core.po
	l10n/de/files.po
	l10n/de/gallery.po
	l10n/de/settings.po
	l10n/el/calendar.po
	l10n/el/contacts.po
	l10n/el/core.po
	l10n/el/files.po
	l10n/el/gallery.po
	l10n/el/settings.po
	l10n/eo/calendar.po
	l10n/eo/contacts.po
	l10n/eo/core.po
	l10n/eo/files.po
	l10n/eo/media.po
	l10n/eo/settings.po
	l10n/es/calendar.po
	l10n/es/contacts.po
	l10n/es/core.po
	l10n/es/files.po
	l10n/es/gallery.po
	l10n/es/settings.po
	l10n/et_EE/calendar.po
	l10n/et_EE/contacts.po
	l10n/et_EE/core.po
	l10n/et_EE/files.po
	l10n/et_EE/settings.po
	l10n/eu/calendar.po
	l10n/eu/contacts.po
	l10n/eu/core.po
	l10n/eu/files.po
	l10n/eu/settings.po
	l10n/fa/calendar.po
	l10n/fa/contacts.po
	l10n/fa/core.po
	l10n/fa/files.po
	l10n/fa/settings.po
	l10n/fi_FI/calendar.po
	l10n/fi_FI/contacts.po
	l10n/fi_FI/core.po
	l10n/fi_FI/files.po
	l10n/fi_FI/gallery.po
	l10n/fi_FI/settings.po
	l10n/fr/calendar.po
	l10n/fr/contacts.po
	l10n/fr/core.po
	l10n/fr/files.po
	l10n/fr/gallery.po
	l10n/fr/media.po
	l10n/fr/settings.po
	l10n/gl/calendar.po
	l10n/gl/contacts.po
	l10n/gl/core.po
	l10n/gl/files.po
	l10n/gl/settings.po
	l10n/he/calendar.po
	l10n/he/contacts.po
	l10n/he/core.po
	l10n/he/files.po
	l10n/he/settings.po
	l10n/hr/calendar.po
	l10n/hr/contacts.po
	l10n/hr/core.po
	l10n/hr/files.po
	l10n/hr/settings.po
	l10n/hu_HU/calendar.po
	l10n/hu_HU/contacts.po
	l10n/hu_HU/core.po
	l10n/hu_HU/files.po
	l10n/hu_HU/settings.po
	l10n/hy/calendar.po
	l10n/hy/contacts.po
	l10n/hy/core.po
	l10n/hy/files.po
	l10n/hy/settings.po
	l10n/ia/calendar.po
	l10n/ia/contacts.po
	l10n/ia/core.po
	l10n/ia/files.po
	l10n/ia/settings.po
	l10n/id/calendar.po
	l10n/id/contacts.po
	l10n/id/core.po
	l10n/id/files.po
	l10n/id/settings.po
	l10n/it/calendar.po
	l10n/it/contacts.po
	l10n/it/core.po
	l10n/it/files.po
	l10n/it/gallery.po
	l10n/it/settings.po
	l10n/ja_JP/calendar.po
	l10n/ja_JP/contacts.po
	l10n/ja_JP/core.po
	l10n/ja_JP/files.po
	l10n/ja_JP/settings.po
	l10n/ko/calendar.po
	l10n/ko/contacts.po
	l10n/ko/core.po
	l10n/ko/files.po
	l10n/ko/settings.po
	l10n/lb/calendar.po
	l10n/lb/contacts.po
	l10n/lb/core.po
	l10n/lb/files.po
	l10n/lb/settings.po
	l10n/lt_LT/calendar.po
	l10n/lt_LT/contacts.po
	l10n/lt_LT/core.po
	l10n/lt_LT/files.po
	l10n/lt_LT/settings.po
	l10n/mk/calendar.po
	l10n/mk/contacts.po
	l10n/mk/core.po
	l10n/mk/files.po
	l10n/mk/settings.po
	l10n/ms_MY/calendar.po
	l10n/ms_MY/contacts.po
	l10n/ms_MY/core.po
	l10n/ms_MY/files.po
	l10n/ms_MY/settings.po
	l10n/nb_NO/calendar.po
	l10n/nb_NO/contacts.po
	l10n/nb_NO/core.po
	l10n/nb_NO/files.po
	l10n/nb_NO/settings.po
	l10n/nl/calendar.po
	l10n/nl/contacts.po
	l10n/nl/core.po
	l10n/nl/files.po
	l10n/nl/settings.po
	l10n/nn_NO/calendar.po
	l10n/nn_NO/contacts.po
	l10n/nn_NO/core.po
	l10n/nn_NO/files.po
	l10n/nn_NO/settings.po
	l10n/pl/calendar.po
	l10n/pl/contacts.po
	l10n/pl/core.po
	l10n/pl/files.po
	l10n/pl/gallery.po
	l10n/pl/settings.po
	l10n/pt_BR/calendar.po
	l10n/pt_BR/contacts.po
	l10n/pt_BR/core.po
	l10n/pt_BR/files.po
	l10n/pt_BR/settings.po
	l10n/pt_PT/calendar.po
	l10n/pt_PT/contacts.po
	l10n/pt_PT/core.po
	l10n/pt_PT/files.po
	l10n/pt_PT/gallery.po
	l10n/pt_PT/settings.po
	l10n/ro/calendar.po
	l10n/ro/contacts.po
	l10n/ro/core.po
	l10n/ro/files.po
	l10n/ro/settings.po
	l10n/ru/calendar.po
	l10n/ru/contacts.po
	l10n/ru/core.po
	l10n/ru/files.po
	l10n/ru/gallery.po
	l10n/ru/settings.po
	l10n/sk_SK/calendar.po
	l10n/sk_SK/contacts.po
	l10n/sk_SK/core.po
	l10n/sk_SK/files.po
	l10n/sk_SK/settings.po
	l10n/sl/calendar.po
	l10n/sl/contacts.po
	l10n/sl/core.po
	l10n/sl/files.po
	l10n/sl/gallery.po
	l10n/sl/settings.po
	l10n/sr/calendar.po
	l10n/sr/contacts.po
	l10n/sr/core.po
	l10n/sr/files.po
	l10n/sr/settings.po
	l10n/sr@latin/calendar.po
	l10n/sr@latin/contacts.po
	l10n/sr@latin/core.po
	l10n/sr@latin/files.po
	l10n/sr@latin/settings.po
	l10n/sv/calendar.po
	l10n/sv/contacts.po
	l10n/sv/core.po
	l10n/sv/files.po
	l10n/sv/gallery.po
	l10n/sv/media.po
	l10n/sv/settings.po
	l10n/templates/bookmarks.pot
	l10n/templates/calendar.pot
	l10n/templates/contacts.pot
	l10n/templates/core.pot
	l10n/templates/files.pot
	l10n/templates/gallery.pot
	l10n/templates/media.pot
	l10n/templates/settings.pot
	l10n/th_TH/calendar.po
	l10n/th_TH/contacts.po
	l10n/th_TH/core.po
	l10n/th_TH/files.po
	l10n/th_TH/gallery.po
	l10n/th_TH/settings.po
	l10n/tr/calendar.po
	l10n/tr/contacts.po
	l10n/tr/core.po
	l10n/tr/files.po
	l10n/tr/gallery.po
	l10n/tr/settings.po
	l10n/uk/calendar.po
	l10n/uk/contacts.po
	l10n/uk/core.po
	l10n/uk/files.po
	l10n/uk/media.po
	l10n/uk/settings.po
	l10n/zh_CN/calendar.po
	l10n/zh_CN/contacts.po
	l10n/zh_CN/core.po
	l10n/zh_CN/files.po
	l10n/zh_CN/gallery.po
	l10n/zh_CN/settings.po
	l10n/zh_TW/calendar.po
	l10n/zh_TW/contacts.po
	l10n/zh_TW/core.po
	l10n/zh_TW/files.po
	l10n/zh_TW/settings.po
	lib/app.php
	lib/base.php
	lib/connector/sabre/file.php
	lib/connector/sabre/locks.php
	lib/connector/sabre/node.php
	lib/db.php
	lib/filecache.php
	lib/fileproxy/quota.php
	lib/files.php
	lib/filestorage/local.php
	lib/filesystemview.php
	lib/group/database.php
	lib/helper.php
	lib/installer.php
	lib/json.php
	lib/l10n.php
	lib/migrate.php
	lib/mimetypes.fixlist.php
	lib/ocs.php
	lib/preferences.php
	lib/public/json.php
	lib/public/util.php
	lib/template.php
	lib/user.php
	lib/user/database.php
	lib/util.php
	lib/vcategories.php
	ocs/providers.php
	settings/admin.php
	settings/ajax/lostpassword.php
	settings/ajax/removeuser.php
	settings/ajax/setbackgroundjobsmode.php
	settings/ajax/setlanguage.php
	settings/ajax/setquota.php
	settings/ajax/togglegroups.php
	settings/apps.php
	settings/css/settings.css
	settings/js/apps.js
	settings/js/users.js
	settings/l10n/bg_BG.php
	settings/l10n/ca.php
	settings/l10n/cs_CZ.php
	settings/l10n/da.php
	settings/l10n/de.php
	settings/l10n/el.php
	settings/l10n/eo.php
	settings/l10n/es.php
	settings/l10n/et_EE.php
	settings/l10n/eu.php
	settings/l10n/fa.php
	settings/l10n/fi_FI.php
	settings/l10n/fr.php
	settings/l10n/gl.php
	settings/l10n/he.php
	settings/l10n/hr.php
	settings/l10n/hu_HU.php
	settings/l10n/it.php
	settings/l10n/ja_JP.php
	settings/l10n/ko.php
	settings/l10n/lt_LT.php
	settings/l10n/mk.php
	settings/l10n/ms_MY.php
	settings/l10n/nb_NO.php
	settings/l10n/nl.php
	settings/l10n/nn_NO.php
	settings/l10n/pl.php
	settings/l10n/pt_BR.php
	settings/l10n/pt_PT.php
	settings/l10n/ru.php
	settings/l10n/sk_SK.php
	settings/l10n/sl.php
	settings/l10n/sv.php
	settings/l10n/th_TH.php
	settings/l10n/tr.php
	settings/l10n/zh_CN.php
	settings/personal.php
	settings/templates/admin.php
	settings/templates/users.php

1 files changed, 115 insertions, 77 deletions

diff --git a/lib/app.php b/lib/app.php
index f9292b331bb..74315903467 100644..100755
--- a/lib/app.php
+++ b/lib/app.php
@@ -27,7 +27,6 @@
  * upgrading and removing apps.
  */
 class OC_App{
-	static private $apps = array();
 	static private $activeapp = '';
 	static private $navigation = array();
 	static private $settingsForms = array();
@@ -36,6 +35,7 @@ class OC_App{
 	static private $appInfo = array();
 	static private $appTypes = array();
 	static private $loadedApps = array();
+	static private $checkedApps = array();
 
 	/**
 	 * @brief loads all apps
@@ -49,15 +49,7 @@ class OC_App{
 	 * if $types is set, only apps of those types will be loaded
 	 */
 	public static function loadApps($types=null){
-		// Our very own core apps are hardcoded
-		foreach( array( 'settings') as $app ){
-			if(is_null($types) && !in_array($app, self::$loadedApps)){
-				require( $app.'/appinfo/app.php' );
-				self::$loadedApps[] = $app;
-			}
-		}
-
-		// The rest comes here
+		// Load the enabled apps here
 		$apps = self::getEnabledApps();
 		// prevent app.php from printing output
 		ob_start();
@@ -69,6 +61,19 @@ class OC_App{
 		}
 		ob_end_clean();
 
+		if (!defined('DEBUG') || !DEBUG){
+			if (is_null($types)) {
+				OC_Util::$core_scripts = OC_Util::$scripts;
+				OC_Util::$scripts = array();
+				OC_Util::$core_styles = OC_Util::$styles;
+				OC_Util::$styles = array();
+
+				if (!OC_AppConfig::getValue('core', 'remote_core.css', false)) {
+					OC_AppConfig::setValue('core', 'remote_core.css', '/core/minimizer.php');
+					OC_AppConfig::setValue('core', 'remote_core.js', '/core/minimizer.php');
+				}
+			}
+		}
 		// return
 		return true;
 	}
@@ -78,7 +83,8 @@ class OC_App{
 	 * @param string app
 	 */
 	public static function loadApp($app){
-		if(is_file(OC::$APPSROOT.'/apps/'.$app.'/appinfo/app.php')){
+		if(is_file(self::getAppPath($app).'/appinfo/app.php')){
+			self::checkUpgrade($app);
 			require_once( $app.'/appinfo/app.php' );
 		}
 	}
@@ -138,6 +144,8 @@ class OC_App{
 	 * get all enabled apps
 	 */
 	public static function getEnabledApps(){
+		if(!OC_Config::getValue('installed', false))
+			return array();
 		$apps=array('files');
 		$query = OC_DB::prepare( 'SELECT `appid` FROM `*PREFIX*appconfig` WHERE `configkey` = \'enabled\' AND `configvalue`=\'yes\'' );
 		$result=$query->execute();
@@ -175,7 +183,7 @@ class OC_App{
 		if(!OC_Installer::isInstalled($app)){
 			// check if app is a shipped app or not. OCS apps have an integer as id, shipped apps use a string
 			if(!is_numeric($app)){
-				OC_Installer::installShippedApp($app);
+				$app = OC_Installer::installShippedApp($app);
 			}else{
 				$download=OC_OCSClient::getApplicationDownload($app,1);
 				if(isset($download['downloadlink']) and $download['downloadlink']!='') {
@@ -187,7 +195,7 @@ class OC_App{
 			// check if the app is compatible with this version of ownCloud
 			$info=OC_App::getAppInfo($app);
 			$version=OC_Util::getVersion();
-	                if(!isset($info['require']) or ($version[0]>$info['require'])){
+			if(!isset($info['require']) or ($version[0]>$info['require'])){
 				OC_Log::write('core','App "'.$info['name'].'" can\'t be installed because it is not compatible with this version of ownCloud',OC_Log::ERROR);
 				return false;
 			}else{
@@ -197,6 +205,7 @@ class OC_App{
 		}else{
 			return false;
 		}
+		return $app;
 	}
 
 	/**
@@ -212,36 +221,6 @@ class OC_App{
 	}
 
 	/**
-	 * @brief makes owncloud aware of this app
-	 * @param $data array with all information
-	 * @returns true/false
-	 *
-	 * This function registers the application. $data is an associative array.
-	 * The following keys are required:
-	 *   - id: id of the application, has to be unique ('addressbook')
-	 *   - name: Human readable name ('Addressbook')
-	 *   - version: array with Version (major, minor, bugfix) ( array(1, 0, 2))
-	 *
-	 * The following keys are optional:
-	 *   - order: integer, that influences the position of your application in
-	 *     a list of applications. Lower values come first.
-	 *
-	 */
-	public static function register( $data ){
-		OC_App::$apps[] = $data;
-	}
-
-	/**
-	 * @brief returns information of all apps
-	 * @return array with all information
-	 *
-	 * This function returns all data it got via register().
-	 */
-	public static function get(){
-		return OC_App::$apps;
-	}
-
-	/**
 	 * @brief adds an entry to the navigation
 	 * @param $data array containing the data
 	 * @returns true/false
@@ -320,10 +299,15 @@ class OC_App{
 				// settings menu
 				$settings[]=array( "id" => "settings", "order" => 1000, "href" => OC_Helper::linkTo( "settings", "settings.php" ), "name" => $l->t("Settings"), "icon" => OC_Helper::imagePath( "settings", "settings.svg" ));
 
-			// if the user is an admin
-			if(OC_Group::inGroup( $_SESSION["user_id"], "admin" )) {
+			//SubAdmins are also allowed to access user management
+			if(OC_SubAdmin::isSubAdmin($_SESSION["user_id"]) || OC_Group::inGroup( $_SESSION["user_id"], "admin" )){
 				// admin users menu
 				$settings[] = array( "id" => "core_users", "order" => 2, "href" => OC_Helper::linkTo( "settings", "users.php" ), "name" => $l->t("Users"), "icon" => OC_Helper::imagePath( "settings", "users.svg" ));
+			}
+
+
+			// if the user is an admin
+			if(OC_Group::inGroup( $_SESSION["user_id"], "admin" )) {
 				// admin apps menu
 				$settings[] = array( "id" => "core_apps", "order" => 3, "href" => OC_Helper::linkTo( "settings", "apps.php" ).'?installed', "name" => $l->t("Apps"), "icon" => OC_Helper::imagePath( "settings", "apps.svg" ));
 
@@ -353,16 +337,65 @@ class OC_App{
 	}
 
 	/**
+	 * Get the path where to install apps
+	 */
+	public static function getInstallPath() {
+		if(OC_Config::getValue('appstoreenabled', true)==false) {
+			return false;
+		}
+
+		foreach(OC::$APPSROOTS as $dir) {
+			if(isset($dir['writable']) && $dir['writable']===true)
+				return $dir['path'];
+		}
+
+		OC_Log::write('core','No application directories are marked as writable.',OC_Log::ERROR);
+		return null;
+	}
+
+
+	protected static function findAppInDirectories($appid) {
+		static $app_dir = array();
+		if (isset($app_dir[$appid])) {
+			return $app_dir[$appid];
+		}
+		foreach(OC::$APPSROOTS as $dir) {
+			if(file_exists($dir['path'].'/'.$appid)) {
+				return $app_dir[$appid]=$dir;
+			}
+		}
+	}
+	/**
+	* Get the directory for the given app.
+	* If the app is defined in multiple directory, the first one is taken. (false if not found)
+	*/
+	public static function getAppPath($appid) {
+		if( ($dir = self::findAppInDirectories($appid)) != false) {
+			return $dir['path'].'/'.$appid;
+		}
+	}
+
+	/**
+	* Get the path for the given app on the access
+	* If the app is defined in multiple directory, the first one is taken. (false if not found)
+	*/
+	public static function getAppWebPath($appid) {
+		if( ($dir = self::findAppInDirectories($appid)) != false) {
+			return OC::$WEBROOT.$dir['url'].'/'.$appid;
+		}
+	}
+
+	/**
 	 * get the last version of the app, either from appinfo/version or from appinfo/info.xml
 	 */
 	public static function getAppVersion($appid){
-		$file=OC::$APPSROOT.'/apps/'.$appid.'/appinfo/version';
+		$file= self::getAppPath($appid).'/appinfo/version';
 		$version=@file_get_contents($file);
 		if($version){
-			return $version;
+			return trim($version);
 		}else{
 			$appData=self::getAppInfo($appid);
-			return $appData['version'];
+			return isset($appData['version'])? $appData['version'] : '';
 		}
 	}
 
@@ -379,7 +412,7 @@ class OC_App{
 			if(isset(self::$appInfo[$appid])){
 				return self::$appInfo[$appid];
 			}
-			$file=OC::$APPSROOT.'/apps/'.$appid.'/appinfo/info.xml';
+			$file= self::getAppPath($appid).'/appinfo/info.xml';
 		}
 		$data=array();
 		$content=@file_get_contents($file);
@@ -470,21 +503,21 @@ class OC_App{
 	 * register a settings form to be shown
 	 */
 	public static function registerSettings($app,$page){
-		self::$settingsForms[]='apps/'.$app.'/'.$page.'.php';
+		self::$settingsForms[]= $app.'/'.$page.'.php';
 	}
 
 	/**
 	 * register an admin form to be shown
 	 */
 	public static function registerAdmin($app,$page){
-		self::$adminForms[]='apps/'.$app.'/'.$page.'.php';
+		self::$adminForms[]= $app.'/'.$page.'.php';
 	}
 
 	/**
 	 * register a personal form to be shown
 	 */
 	public static function registerPersonal($app,$page){
-		self::$personalForms[]='apps/'.$app.'/'.$page.'.php';
+		self::$personalForms[]= $app.'/'.$page.'.php';
 	}
 
 	/**
@@ -492,32 +525,33 @@ class OC_App{
 	 */
 	public static function getAllApps(){
 		$apps=array();
-		$dh=opendir(OC::$APPSROOT.'/apps');
-		while($file=readdir($dh)){
-			if($file[0]!='.' and is_file(OC::$APPSROOT.'/apps/'.$file.'/appinfo/app.php')){
-				$apps[]=$file;
+		foreach(OC::$APPSROOTS as $apps_dir) {
+			$dh=opendir($apps_dir['path']);
+			while($file=readdir($dh)){
+				if($file[0]!='.' and is_file($apps_dir['path'].'/'.$file.'/appinfo/app.php')){
+					$apps[]=$file;
+				}
 			}
 		}
 		return $apps;
 	}
 
 	/**
-	 * check if any apps need updating and update those
+	 * check if the app need updating and update when needed
 	 */
-	public static function updateApps(){
+	public static function checkUpgrade($app) {
+		if (in_array($app, self::$checkedApps)) {
+			return;
+		}
+		self::$checkedApps[] = $app;
 		$versions = self::getAppVersions();
-		//ensure files app is installed for upgrades
-		if(!isset($versions['files'])){
-			$versions['files']='0';
-		}
-		foreach( $versions as $app=>$installedVersion ){
-			$currentVersion=OC_App::getAppVersion($app);
-			if ($currentVersion) {
-				if (version_compare($currentVersion, $installedVersion, '>')) {
-					OC_Log::write($app, 'starting app upgrade from '.$installedVersion.' to '.$currentVersion,OC_Log::DEBUG);
-					OC_App::updateApp($app);
-					OC_Appconfig::setValue($app, 'installed_version', OC_App::getAppVersion($app));
-				}
+		$currentVersion=OC_App::getAppVersion($app);
+		if ($currentVersion) {
+			$installedVersion = $versions[$app];
+			if (version_compare($currentVersion, $installedVersion, '>')) {
+				OC_Log::write($app, 'starting app upgrade from '.$installedVersion.' to '.$currentVersion,OC_Log::DEBUG);
+				OC_App::updateApp($app);
+				OC_Appconfig::setValue($app, 'installed_version', OC_App::getAppVersion($app));
 			}
 		}
 	}
@@ -544,9 +578,13 @@ class OC_App{
 	}
 
 	/**
-	 * get the installed version of all papps
+	 * get the installed version of all apps
 	 */
 	public static function getAppVersions(){
+		static $versions;
+		if (isset($versions)) {   // simple cache, needs to be fixed
+			return $versions; // when function is used besides in checkUpgrade
+		}
 		$versions=array();
 		$query = OC_DB::prepare( 'SELECT `appid`, `configvalue` FROM `*PREFIX*appconfig` WHERE `configkey` = \'installed_version\'' );
 		$result = $query->execute();
@@ -561,24 +599,24 @@ class OC_App{
 	 * @param string appid
 	 */
 	public static function updateApp($appid){
-		if(file_exists(OC::$APPSROOT.'/apps/'.$appid.'/appinfo/database.xml')){
-			OC_DB::updateDbFromStructure(OC::$APPSROOT.'/apps/'.$appid.'/appinfo/database.xml');
+		if(file_exists(self::getAppPath($appid).'/appinfo/database.xml')){
+			OC_DB::updateDbFromStructure(self::getAppPath($appid).'/appinfo/database.xml');
 		}
 		if(!self::isEnabled($appid)){
 			return;
 		}
-		if(file_exists(OC::$APPSROOT.'/apps/'.$appid.'/appinfo/update.php')){
+		if(file_exists(self::getAppPath($appid).'/appinfo/update.php')){
 			self::loadApp($appid);
-			include OC::$APPSROOT.'/apps/'.$appid.'/appinfo/update.php';
+			include self::getAppPath($appid).'/appinfo/update.php';
 		}
 
 		//set remote/public handelers
 		$appData=self::getAppInfo($appid);
 		foreach($appData['remote'] as $name=>$path){
-			OCP\CONFIG::setAppValue('core', 'remote_'.$name, '/apps/'.$appid.'/'.$path);
+			OCP\CONFIG::setAppValue('core', 'remote_'.$name, $appid.'/'.$path);
 		}
 		foreach($appData['public'] as $name=>$path){
-			OCP\CONFIG::setAppValue('core', 'public_'.$name, '/apps/'.$appid.'/'.$path);
+			OCP\CONFIG::setAppValue('core', 'public_'.$name, $appid.'/'.$path);
 		}
 
 		self::setAppTypes($appid);