In Studio, when the course administrator creates a new tab, its name was being
initialized as null in the mongo database. This caused students in LMS to get a
server error when trying to access the course page, since LMS was trying to
process the null tabname for translation, etc. Now tabname is initialized as
'Empty', which is how it was being done in the frontend.

STUD-2000

always include GA file

fix shib reg from course about page

removing thread-local cache for branch_setting

recommender prototype

Add tests for xml import/export between different modulestores

Use field scopes to compute which metadata to strip from the definition during XML import of XMLModule subclasses

[LMS-2945]

Make TinyMCE editor translatable

Combine TinyMCE's built-in translation scheme with the django's translation framework.
So edX's translators can also make translations for TinyMCE used in edX.

Video: fix flaky bok-choy test.

Fix quotation mark & apostrophe related i18n bug

Remove warning filter from library code (should be set by applications/tests directly)

course_specific_reg/login for OpaqueKeys

Tweaks for i18n docs

Just done by using the escapejs function :)

Fix a bug in Individual Due Date Extensions (IDDE).

Remove LocMapperStore

LMS-2918

Add promise to ensure unit visibility is changed

Disable test that is leaving modal open.

Feanil/fix bokchoy

STUD-1963

Change answer <-> response matching in capa.get_submission_metadata

Make text on register button on About page conditional.

The IDDE implementation relied on a StudentModule being created for a
particular block in order to set the extended due date on that block.
Since StudentModules seem to be created on demand whenever data is
written to an attribute with Scope.user_state, it meant that if a
homework problem hadn't yet been touched by a student it was possible
that the due date extension wouldn't take effect for that problem, even
if the due date extension was successfully set for the parent unit.

This patch fixes this problem by creating new StudentModules as
necessary in order to make sure extended due dates propogate properly to
all problems in a unit.