Make code more robust to bad input (for case where DB was populated with string None)
Increase randomness of course name in testcase
update discussion blackout setting warning (TNL-442)
Pinned thread should come first when sorting

Pinned threads come on the top when we sort threads
by most recent activities but in the most activities
and most vote case it doesn't come on top. Pinned
thread should come on top in any case of sorting

TNL-90
Disable http range requests in pdf.js.

A bug in pdf.js or Chrome is causing pdf books to not load.

TNL-488
Disabled failing test test_video_end_time_with_default_start_time.
Properly escape CourseKeys and UsageKeys in html templates

[LMS-11372]
[LMS-11370]
Created commit_on_success_with_read_committed decorator.

This decorator executes the decorated function inside a
transaction with isolation level set to READ COMMITTED.

TNL-367
Tests for the commit_on_success_with_read_committed decorator.

TNL-367
commit_on_success_with_read_committed should only work with atmost
1 level of transactions.

TNL-367
Added commit_on_success_with_read_committed decorator to views
which raise IntegrityErrors.

TNL-367
Merge pull request #5455 from edx/usman/tnl488-disable-range-requests-in-pdf-viewer

Disable range requests in pdf viewer.
Kill DISABLE_RESET_EMAIL_TEST flag

We're better served by just directly testing if we're in the LMS or not.
Merge pull request #5403 from mlkwaqas/waqas/tnl90-ordering-of-pinned-thread-ignored

Pinned thread should come first when sorting
Student-facing documentation v1
Merge pull request #5311 from edx/sylvia/docs/SFD

Sylvia/docs/sfd
Translate strings in LMS Underscore templates
Merge pull request #5265 from edx/zoldak/fix-test

Increase randomness of course name in testcase
Quiet stevedore.extension logging in bok-choy tests
Merge pull request #5392 from cpennington/escape-course-ids-in-html

Properly escape CourseKeys and UsageKeys in html templates