Remove Time limit for Thumbnail Creation
Distinguish old-style from new-style annotations.
Highlights selected content when adding it to a course
Set default annotation style.
Address issue #355
Fix translator language selection.
Add specific permission for course announcements.
Make setting course permissions actually work.
Fix youtube URI recognition in Add Content page.
Allow multiple languages when adding content
Only load student info script when necessary.
Cleaning up code

And making sure that caption tracks still load for the Transcript if
captions are not enabled
Add multiple selected content to course
Minor Code Clean-up