redactor autosave: saves are changes after 3 seconds
redactor autosave: cancel resets value to the one present on redactor initialization
redactor autosave: support escape button for fields edited with redactor
minor changes

+ no brackets when not needed
+ group actions on top

+ don't like the closeEditor boolean variable…but don't know a better solution yet
update changelog
Merge branch 'feature/redactor-autosave' into develop

* feature/redactor-autosave:
  update changelog
  minor changes
  redactor autosave: support escape button for fields edited with redactor
  redactor autosave: cancel resets value to the one present on redactor initialization
  redactor autosave: saves are changes after 3 seconds