* Variable names to conform to naming convention.

* Use static constants where it makes sense

Also includes some other minor cleanup.

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

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

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

Change-Id: Ic9c4944eb90218290545a04ecd7455eb63910012

Change-Id: I6485dee1ebba12b180a9063ed4b530f7dc63cd77

Change-Id: I4c852b7f9928e190572876690d5bef1234494a5d

Change-Id: I33f1cc33969ff74a95b1b8cc0f2add589be5aae0

Change-Id: I36c426086a2b957f6f738d17470c499a01ddac3b

All existing recorded TB tests contain Outer$Inner and not Inner so they will
fail if this is switched to using Class.getSimpleName

Change-Id: Ic79355fbc61403ed2929271d302db35e20dda38c

Change-Id: I345938e5e2196bbc8438b3401879507994b3b050

* Deprecated old methods in Util for backwards compatibility

Change-Id: I9de5e6b930d9f2c0268967dc7b1cf465e6310280

Change-Id: I1fc2bd735b538ebac6d4f41fc8536f26795cc85f

Changed implementations and APIs to use the non-deprecated Element class
wherever possible without breaking backwards compatibility.
* Methods defined in interfaces have not been touched.
* Return types have only been changed methods that should have no
existing third party callers (i.e. private, internal or @since 7.2)
* For methods that third party code might have overridden, the method
has been deprecated in favor of a new method that just delegates to the
old method.
* For methods that can't reasonably be overridden by third party code
(i.e. private, final, static, internal or @since 7.2), the parameter
type has been changed without retaining the old method.

Change-Id: I7da943a77b8d0d0b9185d8c70f87d676a275d24b

This is the first step towards eliminating usage of the class. Reasoning
about upcoming steps will be easier when it's clear which class
"Element" refers to.

Change-Id: Iea5547f789edc77c3b4ac95a5e2eb34d2717999e

Change-Id: I2503ce46b1abbf2fd237eaff538d77e565d25eb6

These characters are used in automated tests of Vaadin itself.

Change-Id: I7cff655e36f39c48f539487609e58eac90ec8761

Change-Id: I88070e09010de77ac4656df47a308aae635a8328

Change-Id: I7df7cbd03497168b772ee0636df05afb7bcc7995

Change-Id: Ib95fecb67e97d71fb68faee82aa9ebf458c735f3

Change-Id: If6faa939953023761dccaf256001c6ece018d5e8

Change-Id: Ia9a938977437a2188a6f5b207789058abce62965

Change-Id: Ia1ad464b6890248e700ed2dbea03746671210eee

ComponentLocator tries to use all available locator strategies until a
match is found (#12641) and VaadinFinderLocatorStrategy also accepts
simple indexed paths (#12642) with legacy locators as a backup. To
enable mixed use of locators, LegacyLocatorStrategy now implements
getElementByPathStartingAt() (#12643).

Change-Id: I6b763565adef0e294b353ef6e2dfdf70ae0d77a9

Change-Id: I8c7db91967003290bbff4e703235aa36d5e9e1f3

Refactored the ComponentLocator class to allow for implementing
different locator strategies.

Change-Id: I93f3decbce4d4361cc605bcf0ce4379a187c482c

Change-Id: I831af0d72d009405ceed3e201bc135dffb43c8b2

Change-Id: I4b3c74ede518aa2712038d1451974a93cdecabc2

The WAI-ARIA fix (#11180) introduced a new FlowPanel in a PopupDateField popup which is now handled properly.

Change-Id: I192018c95d6d1502e3a50e5c30d4125d467ddf94

Change-Id: I419ce4581d1a8b84d4236a85a1333d23f3423b2e

Change-Id: Iea7661ff39d9903f78e290086c1c51f270c8c60d

Change-Id: Ib69645f9cc866893b8a85e369414b7c15b440b6e

* Rename VOrderedLayout to VAbstractOrderedLayout
* Move VAbstractOrderedLayout to the orderedlayout package
* Extract Slot to a standalone class with Icon as a private inner class
* Extract CaptionPosition to a standalone class

Change-Id: Id9450b30838a4511bd3c3b7cf371e145274ff198

Change-Id: Ida6e0cb7064580be36627fd735d79b82ee69356d

Change-Id: I5bc64ed7446ca6f87311bf63f49fb883cfd8b538

Change-Id: I9f7714cc8a723550e521b1cd0fb70499f3f12138

Change-Id: I5755bc292b9e752765086fcce8ce5edaa5300f34

Change-Id: I756b5d8a66b89eedb335c23b1ae9610bdb80b2d0

Change-Id: I58aeee42ef386dd3eef8fdf25f8dd430eb22774c

BooleanTextField test)

ComponentLocator

AbsolutePanel inside a Gridlayout which has been removed.

VBoxLayout/domChild