* Variable names to conform to naming convention.

* Use static constants where it makes sense

* AbstractDateField.formatDate to be abstract

Remove invalidDateString paramter, as it can be deduced

* Fix test

* Remove AbstractDateField.getResolutionVariable

VAbstractTextualDate: rename updateDateVariables() to updateBufferedResolutions()

* Revert to use fixed value of MONDAY.

* release notes

* updateAndSendBufferedValues()

* Missed call to updateAndSendBufferedValues();

* release note

* Simplify lambda expressions

And remove unneeded 'return' keyword.

* Format

Add additional class names and style to components and error indicators to distinguish different error levels.

Vaadin 8 implementation of #9816. Cherry picked changes and added compatibility package component changes and tests.

Resolves #3139

And some trivial test enhancements

And remove unused imports.

Component.setCaption has thorough Javadocs that are shadowed by a very
brief snippet in AbstractComponent and an erroneous description in
Panel. By removing those snippets, component classes will instead
inherit a much more useful description of the method.

Fix since tags for the server and shared modules and new types in client.

* Overload AbstarctComponent.setDescription() with content mode parameter

Fixes #8185

First round for #8132.

Change-Id: I9feaad000cb16351d281d1c0037330dfb76186ff

Change-Id: I80b73b653e97904605dc62484a7448f3bfbf722d

Change-Id: I0baea991bd80075d63c5d57e3b07f4e9fcb12676

Change-Id: I33c8c977bf8cd2d4c637d7988586496ce963465f

Change-Id: Ib867b71cab4cf5cda89f272986930297b7a84ced

Vaadin 7 compatiblity fields still use setRequired via AbstractField (legacy).
Public setRequiredIndicator is added to AbstractField, AbstractMultiSelect and AbstractSingleSelect.
Internally it is still handled on AbstractComponent & -Connector level.
Changes the declarative syntax, required -> required-indicator-visible.

Fixes vaadin/framework8-issue#419

Change-Id: I940dc66944d27584bd78e5452aee627ee3abd03a

Change-Id: Ief1191b34018e6049c8d20d341150c0b9804f621

Change-Id: I979448e5af032333a6a2f7b99b11ab16c41d7b18

All components are now in immediate mode by default.
V7 compatibility components will use AbstractLegacyComponent that has immediate.
V7 ColorPickerPopup will not have setImmediate, since it extends V8 Window,
which is not in V7 compatibility packages.
Removed OutOfSync and ResynchronizeAfterAsyncRemoval Tests,
since those tested UI in not immediate mode, which is invalid now.
Removed WindowResizeListener, LazyWindowResize, test UIs,
since both used immediate and there were no test run for either.

Change-Id: Ie1c8cfa4c48461db944ff9b13efe8473c5a3298f

This patch updates server side add*Listener methods to return
a registration object and deprecates their corresponding
remove*Listener methods.

Additionally this patch removes add/removeListener methods which were
deprecated in 7.0.

Change-Id: I26ac5f11882512288fbbf601c7cb2aaff653ec76

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

Change-Id: Ic9c4944eb90218290545a04ecd7455eb63910012

Change-Id: I4667d58ee54c8fda5af0608e232e403c4f8e424b

Change-Id: I53f3bd49c234a8d126887f6effa83a3c5c92b4e0

Change-Id: I6485dee1ebba12b180a9063ed4b530f7dc63cd77

Change-Id: I4c852b7f9928e190572876690d5bef1234494a5d

Change-Id: I33f1cc33969ff74a95b1b8cc0f2add589be5aae0

Change-Id: I0a1fc0bf6f3de1b7d6975cd87cb7bb65c38dba4e

Change-Id: I46ce708e0f10e4c9fa3d11a2aef5be0248c2999f

e.g., Panel shadows actionManager with its own instance field
* solution: always invoke getActionManager()

Change-Id: Ibeca2ad53cb1175ae1ebcfb4d68b3d2bf36ea8b2

Change-Id: I1e90d422ec716092e6d407b6965902f48eac1646

Change-Id: I5c740f4e9cb28103bab199f9a552153d82277e7e

Also add missing test for GridLayout alignments

Change-Id: If553c9e254fb754cb020a63013bfcc9ecae3a056

Change-Id: I93d5d20925b8ac9b4b108ccc6deec2090e68aa0d

Change-Id: I49287cc38605abb75059cb553e3baed2a8359067

Change-Id: I7ddf9fa8200df4eb6fcd23fc79ef55d1075d41cd

Change-Id: I91f4faae3e40ad4cd2b3037ce64d8776f61c004e

Change-Id: I113aa38869cf4dceec24315e70d3b44eae526f65

Removed invalid @since from MarginInfo.

Change-Id: I7ad0dee47e8686c5cbca05ca1363ae8741642be8

WriteDesign now assumes the element it receives is pristine, so elements cannot
be reused without someone else clearing them first. Currently only
DesignContext.createElement directly invokes writeDesign, and it always passes a
new element to it.

Change-Id: Icb777da1d73a28150041914dd9743e7aa0b25e16

Change-Id: I2fb48bff5e55d3d494d9fa927305447dc0c4d816