#10714 iOS: On iPad touch listeners prevents CKEditor selection
Code style fixes.
Reverted change for other browsers than mobile Safari.
Changelog entry.
Merge branch 't/10714'
Corrected changelog.
Added backspace handler – collapsed selection, adjacent blocks.
Added support for DEL key.
Code refactoring: general clean-up.
Code refactoring: extended comments and removed obsolete code.
Used range#checkStartOfBlock and range#moveToClosestEditablePosition instead of CKEDITOR.dom.walker to make the procedure bulletproof and maintainable (boguses, non-editables, etc.).
Changed lister event: keyup -> key, so it is executed later than other existing key listeners.
Added basic support for bogus BRs.
Fire saveSnapshot events when handling backspace/delete.
Removed long if statement in favor of an early return.
Minor comment clarification.
Fixed JSLint issue.
Added domEvent property for editor#key event.
Handle backspace and delete with modifiers the same way as without them.
Handle backspace and delete with modifiers the same way as without them in lists and tables too.