Simplified and optimized editor.widgets.getByElement().
Changelog entry.
Merge branch 't/11983'
Fixed: Caret possibly out of viewport if pressed BACKSPACE/DEL and Webkit/Blink custom handler is involved.
Changelog entry.
Merge branch 't/11960'
Changelog and API docs cleanup.
Fixed: No context menu entry on right-click in Webkit/Blink (Mac).
Made the code more straightforward.
Changelog entry.

Conflicts:
	CHANGES.md
Merge branch 't/11306b'
Fixed changelog entry.
Fixed: Alignment labels inside of Image2 dialog are not translated.
Updated language files with new missing keyword.
Changelog entry.
Merge branch 't/11957'
Init nested widgets after setting data in nested editable.
We don't need this hack any more.
Added note to initOnAll about nested widgets.
Simplified nested widgets dev sample, added console.