Merge pull request #60 from trypton/edt-654

EDT-654 Undo button only working once
EDT-639 Can't save editor configurations when in preview mode.
Merge pull request #61 from trypton/edt-639

EDT-639 Can't save editor configurations when in preview mode.
EDT-655 Cannot edit page with open Javascript comment in title
Merge pull request #63 from trypton/edt-655

EDT-655 Cannot edit page with open Javascript comment in title
EDT-612 Image overrides are not being ignored.
Merge pull request #64 from trypton/edt-612

EDT-612 Image overrides are not being ignored.
EDT-654 Undo button only working once