Fix for bug #11897.
Tests: Added tests for enter key in empty list item with format.
Changelog entry.
Merge branch 't/11897'
Preventing editor#doubleclick in order to avoid extra link dialog upon doubleclick.
Image2 does no longer need this fix.
Changed tests messages, removed replaceMethod() usage.
Added widget#doubleclick comments, removed unnecessary return value.
Clarified widget#doubleclick documentation.
Changelog entry.
Merge branch 't/12140'
Fixed issue with setting unwanted disallowed styles by image dialog.
Code refactoring: Wrapped image plugin test in IIFE and added strict mode.
Tests: added for #12132.
Tests: Set editors to inline mode in image plugin tests.
Tests: Test stopped working after changing editors to inline mode, because wrong image was checked.
Tests: Added test for image dialog automatically loading image's dimensions.
Changelog entry and corrections.
Merge branch 't/12132'
Merge branch 'master' into major