Also includes some other minor cleanup.

Under certain circumstances IE 11 (11.0.45 / 11.0.9600.18762) produces an exception when collapsing/expanding rows (particularly the first child after the very first element) in a TreeGrid within a Window.

This workaround removes the row explicitly before inserting, instead of letting JS handle it.

Fixes #9850

Now the DnD events are listened from tablewrapper element,
which contains also grid's header and footer, making it possible to
drop on top of them.

* Allow differentiating touch scroll from DnD

Provide Escalator API to check if a touch scroll is active, and to
specify a delay after which a non-moving touch should not scroll.

Adds two variants:
- find widget of any type
- accept all or only exact matches

Updates uses of findWidget(e, null) in non-compatibility packages.

It is possible to customize the drag data for each row. (#8706)

Fixes #8396

Fixes #8758

* Use computed style for Escalator size calculations

The old method of using getBoundingClientRect does not work as expected
if a transform has been applied to the element or one of its parents.
For instance PopupView animates itself using a scale(0) -> scale(1)
animation. When scale(0) is active, getBoundingClientRect will return 0
for all sizes while computed style ignores the transform and returns the
expected value.

Fixes #8793

* Rename getMaxEscalatorRowCapacity to describe what it does

* Always calculate Escalator max row count the same way

This changes Escalator to not take a horizontal scrollbar
into account when trying to determine "maximum visible rows". This will
add another row, compared to previous versions, when there is a horizontal
scrollbar. In reality, it would likely make sense to always add 10 more rows
to have some buffer above and below the visible area.

Fixes #8661

Do not calculate column widths unnecessarily, especially for columns
with fixed width.

Fixes #8678

* Fix removing rows from the middle of Escalator

Fixes #8825

* Fix exception when no columns are shown or all columns are frozen

Fixes #8329

* Fix java packaging order (#106)

Closes vaadin/archetypes#113

* Use proper UTF-8 encoding for Content-Disposition filenames (#19527) (#6607)

* Enable changing the backing bean for BeanItem (#4302) (#77)

When storing a bean to the database, you typically get a new and updated
bean instance back. By allowing to change the bean instance, we make it
possible to just update the single BeanItem instance which can be used
in many places.

* Make AtmospherePushConnection methods public (#7973)

There is no sensible way to use a custom version of APC, so protected
access does not help in any way to access the underlying resource and/or
connected UI.

* Use correct indexes in multiselect checkboxes after removing rows (#8072)

Fixes #8011

* Fix removal of hidden Grid columns (#8071)

Fixes #8018

* Call error handler for exceptions in UI.init() (#8055)

Fixes #4995

* Render font icon correctly on the 'more' menu item (#8126)

* Render font icon correctly on the 'more' menu item

Fixes #8125

* Reopen Grid details on attach, fixes #8015 (#8074)

Fixes #8015

* Fix broken Grid tests after picking changes from 7.7.7

Removed duplicate setDetailsVisible calls from onDetach

* Correctly detach components in merged cells when a static row is removed (#8142)

Fixes #8140

Running formatter:format will format all files in a submodule using an
embedded Eclipse compiler (based on Neon SR1)
according to the regular formatting settings file.

Change-Id: I0ae9144817db3bb730c80748d5e9190484b323e7

# Conflicts:
#	uitest/src/main/java/com/vaadin/tests/widgetset/client/grid/EscalatorBasicClientFeaturesWidget.java

* Prevent adding several scrollbar handlers (#19189).

Change-Id: Ib0cc6c6835aab6d263f153362a328bcf2be7bc5c

* Prevent adding several scrollbar handlers (#19189).

* Keep expand ratio for last row/column when reducing grid layout size (#20297)

Change-Id: Iff53a803596f4fc1eae8e4bfa307b9c1f4df961a

* Fixed drag and drop failure when message dragged from email client (#20451)

When dragging message form email client on Windows, item.webkitGetAsEntry()
might return null creating NPE on the client side. Added additional checks
for this situation.

Change-Id: I569f7e6d0d7b137f24be53d1fbce384695ae8c73

* Change expected pre-release version number pattern in publish report

Change-Id: Icdacecc490d2490ea9e262f5c5736c1dece2a89d

* Mark TextField/TextArea as busy when a text change event is pending
(#20469)

Change-Id: I404985ae0be1e7dc65171b610032f8649e700f50
# Conflicts:
#	client/src/main/java/com/vaadin/client/ui/VTextField.java
#	uitest/src/main/java/com/vaadin/tests/components/textfield/TextChangeEvents.java

* Fixed touch scrolling issue in Surface and WP devices (#18737)

Fixed by using pointerevents instead of touchevents when the browser is
IE11,
or Edge. Also added touch-action: none; css rules into escalator.css to
prevent
default touch behaviour on IE11 and Edge. Does not affect IE8 to IE10
browsers,
behaviour on those will stay the same as before the fix.

No new unit tests since we do not have automatic touch testing
possibilities yet.
Please test manually with Surface: IE11 and Edge, use for example
uitest:
com.vaadin.tests.components.grid.basics.GridBasicsomponents.grid.basics.GridBasics

Change-Id: Iddbf1852e6ffafc855f749d6f4ebb235ed0f5703

* Add lazy/simple resize mode to Grid (#20108)

Change-Id: I47427efc28c350382dba8c1f50fd332a3f4585e4

# Conflicts:
#	client/src/main/java/com/vaadin/client/connectors/GridConnector.java
#	client/src/main/java/com/vaadin/client/widgets/Grid.java
#	server/src/main/java/com/vaadin/ui/Grid.java
#	shared/src/main/java/com/vaadin/shared/ui/grid/GridState.java
#	themes/src/main/themes/VAADIN/themes/base/grid/grid.scss
#	uitest/src/main/java/com/vaadin/tests/components/grid/basicfeatures/GridBasicFeatures.java

Change-Id: Ieca56121875198ed559a41c143b28926e2695433

* Fix NPE in case some items don't contain all properties of Grid.
This could occur in when parent is a different entity than its children
in hierarchical data.

Change-Id: Icd53b5b5e5544a3680d0cd99702ab78224b2dc08

# Conflicts:
#	server/src/main/java/com/vaadin/data/fieldgroup/FieldGroup.java
#	server/src/main/java/com/vaadin/ui/Grid.java

* Mark TextField/TextArea as busy when a text change event is pending
(#20469)

Change-Id: I404985ae0be1e7dc65171b610032f8649e700f50
# Conflicts:
#	client/src/main/java/com/vaadin/client/ui/VTextField.java
#	uitest/src/test/java/com/vaadin/tests/components/textfield/TextChangeEventsTest.java

* Add lazy/simple resize mode to Grid (#20108)

Change-Id: I47427efc28c350382dba8c1f50fd332a3f4585e4

* Removed V8 VTextField unused import, forgotten @RunLocally.

* Don't rely on selenium "sendKeys" behavior.

* Revert "Change expected pre-release version number pattern in publish report"

This reverts commit 8df27b952d.

* Migrate TextField/TextArea patch from 7.7 to master (modern components)

Mark TextField/TextArea as busy when a text change event is pending
(#20469)

Change-Id: I404985ae0be1e7dc65171b610032f8649e700f50

Change-Id: I99347ee1d0f2f13fcb8e110d2e7192590e4f9456

This is needed to be able to get the information from e.g. TestBench

Change-Id: I95ec6064f602e6a8b24e35cc59d467e9c8b31c1e

commit 11c3f8bd9e - Test and its UI class
are added (both V8 and V7). Required functionality should be available
via modern GWT version.

commit 729dbf96fe - About update release
notes. No need to be included.

commit 675f38349c - V8 already contains
correct Import-Packages section which uses osgi.javax.servlet.version
variable whise version is 3.0.0 at the moment.

commit 5da7c052f5 - Use Vaadin plugin
7.7.0 from 7.7.0.alpha1. Is not applicable.

commit 1df80001ab - Updated tutorial to
Vaadin 7.7.0. Is not applicable. The tutorial already contains correct
links and updated source code snippets.

commit 8b4f0ed8a8 - set-property-fallback
name="user.agent" value="safari". Is already there.

commit 28ed04e827 - Fix animation end
listeners so they are always removed. Is already there.

commit 408253bc3f - Use servlet context
classloader when finding servlet class for websockets. Is already there.

commit 7a6f250d89 - Fire actions before
removing menu from the DOM. Is already there.

commit 9b66c6eb9b - Do not run test on IE8
as IE8 is broken. Transplanted.

commit 3faa43ff39 - Discard for DateField
when the data source contains null. It is not applicable for V8 (There
is no anymore discard method in DateField (and no datasource suport in
field)). Transplanted for DateField in compatibility.

commit e0c1f91a3d - Fix ComboBox paging
when number of items equals page length. It's already done by another
fix which replaced ComboBox in compatibility package to the V7 version.

commit 83a1b8a096 - Update DOM and update
escalator row count in the correct order. Transplanted.

commit 45f2fba8ff - Prevent editor from
being canceled while it is being saved. Transplanted to compatibility
package. Is not applicable to modern Grid.

commit ad67f7f43a - Delete broken
stylesheet and revert to default style until a new stylesheet is
created. Is already there.

commit c970a78d42 - Always show loading
indicator for JavaScript RPC. Transplanted.

commit 2aad341606 - Make test independent
of any converters present in the factory. It's already there.

commit c9ad48430b - Do not include
yuicompressor for Sass compiler. Transplanted. Exclusion is added into
vaadin/pom.xml

commit 52d01a68e9 - Test for Firefox
download disconnecting push channel. Transplanted.

commit 4bc375d1d2 - Handle encoded URL
characters correctly when constructing widget set name. Transplanted.

commit 17ba88eaf8 - Update version to
7.7-SNAPSHOT. Is not applicable.

commit 47b7b13e5c - Ensure Firefox always
updates the grid scrollbar. Transplanted. Made changes in the logic to
the test for modern Grid component.

commit 4d851ba21d - Calculate column
widths immediately if there is data. Transplanted to both client side
modules.

commit 8f0b1a1dd0 - Skip Maven enforcer
plugin during demo validation. Transplanted (one build file is
affected).

commit 62815353e1 - Build demos from 7.7
branch (now for master branch). FW8 demos are added (one build file is
affected).

commit 815d72115d - Make test pass on all
browsers. Transplanted to both V7 and V8 version tests.

commit 516c428ca1 - Use widget set
specified by init parameter. Transplanted to the one UIProvider class.

commit b00c580ed7 - Use correct column
index when calculating min width during resize. Transplanted into both
client side classes (main and compatibility) as is. Test for V7 is
transplanted as is. Test for V8 is written from scratch based on V7
version.

commit 7dd91cf057 - Fix regression that
broke widget set compilation in 7.7.1. It's already there.

commit c665731b0b - Ensure temporary
layout manager state is cleared at the end of a layout phase.
Transplanted to the one LayoutManager class.

commit 57a965251a - Fix assertion error
when column widths are calculated. Transplanted to both versions of the
client Grid widget.

commit c5c52684eb - Format Java files
using Eclipse Neon and Vaadin settings. Only formatting changes. Is not
transplanted.

f5d06d8771 - Change javadoc to a style
Eclipse formatter can handle. Transplanted to both versions of the
client Grid widget.

commit 6033e13c20 - Make initially
disabled grid work when enabled. Transplanted to both client side
modules.

commit a2d6e4fb4b - Use
requestAnimationFrame when scrolling in Grid. Transplanted to both
client side modules.

commit fe9438e7b7 - Specify branch also
for Sampler. Is not applicable for master branch.

commit 1ec5d8ef7c - Update to Chrome 53.
Is already there.

commit 961851bfbc - Updated link to new
step 1 video in tutorial. Is already there.

commit 41dc2fe161 - Revert "Use widget set
specified by init parameter. Transplanted to the one UIProvider class.

commit 092b4f7f31 - Use widget set
specified by init parameter. Transplanted to the common server side
classes.

commit 977cec7e31 - Fix widget set builder
to create widget set in correct location. Transplanted to the one
ClassPathExplorer class file.

commit 6c12ad89ea - Format project pom
files using correct settings. Is not transplanted: only formatting
changes for POM files.

commit 0aad93ecc1 - Add tests for
widgetset compilation in different modes. Transplanted. New test
projects.

commit 0a3a1ef832 - Use
versions-maven-plugin 2.3 to avoid NPE while setting project version. Is
already there.

Change-Id: Ie3a5088f25de1772f01ea30c4a5eba0b169ee0ab

Change-Id: I97efacde11852a08ccc799e0aef4d6e23484f522

Does not modify compatibility packages to keep to closer to Vaadin 7.7

Change-Id: Ic9c4944eb90218290545a04ecd7455eb63910012

Change-Id: I16f9577ea4091fb4febe167d76e141b5945f53ab

Change-Id: I2ca0b41c3cc2ed851646ced2e0693a93b1853c95

Change-Id: I6485dee1ebba12b180a9063ed4b530f7dc63cd77

Change-Id: I4c852b7f9928e190572876690d5bef1234494a5d

Change-Id: I33f1cc33969ff74a95b1b8cc0f2add589be5aae0

When Grid is inside of a Tab (Tabsheet or Accordion) and
height mode is set to HeightMode.ROW, layout happens
before row height is known. To fix that, an event is fired
and a handler starts a layout after everything is calculated.

Change-Id: I516b09b5a7febc7ab3931fe582752eb5c888e4a8

Change-Id: I2c5b617dbd0da4f352e494097a601cea922f14df

- new height more for undefined height that works like in Table and
resizes the grid when details row opens or closes

Change-Id: I2dc817140308093865be30de72edcd6494e4a44b

Change-Id: I36c426086a2b957f6f738d17470c499a01ddac3b

Use Escalator cell size calculation without content to determine the
absolute minimum size for cells. This is used in Grid when drag resizing
or sorting columns to prevent cells from overflowing to the next row.

Change-Id: I2d598232d7d2b8729b11fe190b68ca3e42ee3652

Change-Id: Idfde7842fd31be4b84a1436b40eaa932b6a6c349

Change-Id: If8399a13585ae691ea3b3ee4a41a1a38b342adb9

* screenshot based tests for all themes for various features in Grid

Change-Id: Id44f319b517fdfa419b70d30a9f8d4bd5e82fa63

This patch also corrects a possible issue with calculating columns when
it is not attached.

Change-Id: I616eb0f6d060991d9f461b7e2b1e3f7f30fbd122

- Since grid was not cancelling scrolling when multiple touches,
zooming was not working, this patch fixes "zoom trap".
- Prevent default when moving the scroll in touch devices to avoid
parent scrolling

Change-Id: I47856ef20bc835bb2b310b45f6d2749e950e8e7a

This is a new implementation of scrolling for grid we
have in v-grid.
It uses GWT animations instead of having to deal with
the HTML5 animation framework directly and implements
the concepts of velocity and acceleration.

Change-Id: I11cb0098e8a0e61b989edd7a383a069fa064ab32

Change-Id: I624c44056d43a6a3205be46a748070f269a3c3e3

Change-Id: Id7e72fbd31277b7c93055c8aa9309d73c86795d6

See https://github.com/vaadin/components/pull/57#issuecomment-127622121 for details

Change-Id: Iba32b6f36f5c98c86a3902133c7486af2dad9669

Change-Id: I5ecd8a91bd1ebea809d04a54307fcd752fbe3f39

Change-Id: I8dec7bbbfc93436eb2fbc1c15cb53e6bfca99e78

Change-Id: I58ac7c03be2a4d950ecfba609fddf862f2fd966f

Change-Id: I4246b8e5db528436fe355bdf57d2b3f88173474c