Add 401 error handler.

Ahodges/documentation/doc158

Uses ModuleStoreEnum in is_xblock_visible_to_students

Get active student count from new analytics data API

Disabled by default.

consolidate new post form variants into single client-side template/view

Make sysadmin dashboard gitlog date timezone-aware

Make LinkedIn auth provider request email by default.

Adds is_xblock_visible_to_students

ORA2 release-2014-06-30T13.39

Fixed IE security warning on course page.

ModulestoreEnum class.

LMS-2892

Fix saving error of video editor with non-english translations

Fix modulestore merge conflict with heartbeat.

Release

Updated for PR 4106, BLD-1134

PR 2571, log stop_video event

Do not look for country if no new ip.

Corrected event name in description

Add test that xml body was parsed successfully.

Currently the code in ```tabs-aggregator.coffee``` uses the display name of a tab as the key to index the current tab. When a non-english translation is applied, the javascript code will get localized names instead of the original english names, which causes the following ```getValue``` function fails as it cannot reference the correct tab.
Use the 'data' attribute to store the original tab name.

Enable mixed modulestore

Refactor get_parent_locations STUD-1663