Update Babel and Transifex libraries
redirects edge landing page to /dashboard
Add TabsEditingDescriptor for VideoAlpha

Updates comment
Make Model descriptor class property.
Fix tests
Fixes
Fixed typo of function call. Added comment why it is necessary.
Merge pull request #571 from edx/valera/one_speed_html5_fix

Fixed typo of function call. Added comment why it is necessary.
Hotfix world cloud functionality
Merge pull request #572 from edx/vaxxxa/master-word-cloud-hotfix

Hotfix world cloud functionality
more template fixes for faq, press, and help
Merge pull request #565 from edx/adam/i18n-bug-fixes

more template fixes for faq, press, and help
Merge pull request #386 from edx/alex/editor-tabs-for-videoalpha

adds TabsEditingDescriptor, pluggen in VideoAlphaDescriptor
Merge pull request #569 from edx/fix/adam/edge-redirect

redirects edge landing page to /dashboard
Check that content-type starts with application/json

When Chrome sends the AJAX request to add a user to the course team, it sets the
Content-type to "application/json". However, when Firefox sends the same request,
it sets the Content-type to "application/json; charset=UTF-8". This commit only
checks that the Content-type begins with "application/json", not is identical
to it; that way, Firefox can play, too.
Merge pull request #566 from edx/db/i18n-lib-update

Update Babel and Transifex libraries
Merge pull request #579 from edx/db/course-team-role-fix

Fix for STUD-582
redirects lms landing page to student.views.index if there is no marketing site

resets the cms edge redirect to '/'
Merge pull request #582 from edx/fix/adam/redirect

Fix/adam/redirect
add university_profile/edge.html for edge landing page
creates "edge" case
Merge pull request #587 from edx/fix/adam/redirect

add university_profile/edge.html for edge landing page