LDEV-4187: Synchronise completeActivity() method again. Do not pull LearnerProgress from DB as the same object seems to be fetched fron cache anyway. Add extra logs for attempted->completed activity transition.
LDEV-4181: When sequences are imported if maxRating or ratingStyle is null, need to set them to appropriate values. Will happen when a sequence is imported from a server that did not have these fields.
LDEV-4115: Response enforced for CKEditor (when option turned on in authoring). Also changed the button disabling to hide/show as disabling does not work. So the button is hidden while the entry is saved on the server.