Clean up translated strings in registration page, dashboard, and track selection flow
Restore copy originally present on the registration page
Add middleware optionally to catch unenrolled students who fail has_access (TNL-286)
redirect users from about page to info page when there is a marketing site (TNL-286)
display banner on course info page if user is not enrolled (TNL-286)

write failing tests for info page banner
move to s3fs and handle one time url
only load tabs if user is enrolled in course (TNL-286)

add tests for static tabs
update number of queries in embargo test
Merge pull request #4898 from edx/danielli/recommender_pyfs

RecommenderXBlock with pyfs, better UX, and modification of logging
Hiding Insights link for non-staff users
Merge pull request #5188 from edx/insights-staff-only

Hiding Insights link for non-staff users
Added note about video URLs hidden by default
Merge pull request #5284 from edx/sylvia/docs/DOC-866

Sylvia/docs/doc 866
Merge pull request #5248 from edx/renzo/cleanup-translated-strings

Clean up translated strings in registration page, dashboard, and track selection flow
Merge pull request #5281 from edx/adam/hide-tabs-if-not-enrolled-rebase-2

Deployed as hotfix
Merge pull request #5302 from edx/release

Release merge - post hotfix-2014-09-19-1
Disabled student view if course is not yet released for students.
LMS-6617
Merge pull request #4460 from edx/waheed/lms6617-disable-student-view-if-course-is-not-released

Disabled student view if course is not yet released for students.