Add possibility to remove htmlPreview uiElement from image plugin - errors fix.
Tests: Added ticket test.
Fixed remaining preview's usage.
Tests: Added another case for image dialog without preview.
Changelog entry.
Merge branch 't/12377'
Added app ignore paths to the Bender configuration file.
Doc strs corrections.
API Docs: editable & focus manager revised.
API Docs: Format plugin.
Fix more selection trouble in iOS6 and 7 #10714
Code style.
Changed editor.window.focus() to editor.focus().
Code comment.
Changelog entry.
Merge branch 't/12381'
Tests: Added acceptance error range.
Tests: Improved - added assert isNumberInRange.
Tests: Assertion function isNumberInRange fail now when wrong parameters provided. Also tests for assertion function updated.
Tests: Refactoring.