secure-cookies: Allow to use secure HTTPS cookies (Django setting)

Cf https://docs.djangoproject.com/en/1.4/ref/settings/#std:setting-SESSION_COOKIE_SECURE
Make code more robust to bad input (for case where DB was populated with string None)
Draft of mobile FAQ for students
Draft of mobile FAQ
Increase randomness of course name in testcase
Draft of mobile FAQ
Revisions to mobile FAQ for students
skipping the firefox version validation if firefox is not the browser being used
Displaying Insights Link for All Instructors
Merge pull request #5391 from edx/clytwynec/skip_firefox_version_check_if_not_using_firefox

skipping the firefox version validation if firefox is not the browser be...
Click on posts I'm following should load threads

When as course moderator when we click on posts
I'm followng from sidebar dropdown it gives error
that threads cannot be loaded. It should show all
the threads the user is following.

TNL-469
Remove unimplemented grade_summary feature.
Add molecule viewer tool to Exercises and Tools section
Merge pull request #5273 from edx/sylvia/docs/DOC-759

Sylvia/docs/doc 759
TNL-272: Fix double loading of cms-modules.js.
Merge pull request #5388 from mlkwaqas/waqas/tnl469-error-loading-following-threads

Click on posts I'm following should load threads
Merge pull request #5401 from edx/insights-for-all

Displaying Insights Link for All Instructors
Merge pull request #5290 from mitocw/bdero/fix-grade-summary-opaque-keys

Remove unimplemented legacy dashboard grade_summary feature
Converted annotation lettuce test into bok-choy test.
TNL-353
add couse key verification decorator in common for use in both studio and lms
PLAT-88