Image Annotation Tool: Double border, color borders and tag buttons
Annotation Tools: Bug fixes - tinymce bug after exiting full screen, stupid check for type, missing tag subscriptions
Annotation Tools: CSS fixes for editor
Annotations Tools: spacing and comment fixes - will be squashed
Annotation Tools: Addressing PR Comments from DB
Fixed UnicodeEncodeError in student`s migrations
Change text of registration to enrollment
Update translation strings to ensure tests pass
Merge pull request #5567 from edx/will/register-says-enroll

Change text of registration to enrollment
Annotation Tool: Search happens when user hits enter
Remove weekly tracking log instructions

@stroilova, @victor, @mhoeber, @clintonb, @WatsonEmily, please review.
Merge pull request #5635 from edx/ahodges/doc/DOC1120

Remove weekly tracking log instructions
Merge pull request #5603 from lduarte1991/lduarte-harvardx-pr32

Image Annotation Tool: Border and tag-based coloring
Merge pull request #5634 from Edraak/fix-unicode-error-in-migration

Fixed UnicodeEncodeError in student`s migrations
Added three missing required states for video progress slider.
TNL-89
Fixed screen reader issues.
TNL-568
TNL-588
TNL-595
Merge pull request #5612 from edx/waheed/tnl89-add-missing-required-states-for-video--progress-slider

Added three missing required states for video progress slider.
Merge pull request #5639 from edx/waheed/fix-screen-reader-user-issues

Fixed screen reader issues.
TNL-281: reduce amount of JS in marketing iframe