Ensure account creation succeeds before creating comments service user

Do not allow students to pin/unpin forum threads

Also improves handling in cases where account creation did succeed, but
comments service user creation did not.

Depends on commit 88abdd8a0b20bc9816f487b25abdea1953f5661d in https://github.com/edx/cs_comments_service

JIRA: FOR-522

refactor static tab tests

Start introduction of JSLint for JavaScript

further explanation on entry_points

Fix URLs for static resources

Enable/disable unicodes in course id's

Fix LMS-2349 (Progress page broken for pure xblocks)

Markhoeber/documentation/ca reorg real

Removing JSLint configuration.

This fixes LMS-2387 by removing a resize call that prevented scrolling.

[LMS-2349]

This is known to be broken.

[LMS-2349]

It also enables syntax highlighting for matlab input fields, which
wasn't previously enabled.

Dhm/meld pretty factory

Fix donwload subs for non youtube videos and non-en language.

Internationalization fixed for error msg on staff grading page.

LMS-2195

Update translations (autogenerated message)

Edits from Alison's initial review

DOC-34

Consolidate information from data.edx.org, Appendix E, and problem types

Improve dump_course_ids test for unicode course_ids

Check for status in test.
Add test for track url.
Fix test to use cookie.
Use download_track in feature file.
Add new tests for get_transcript.
Add html5 test.
Add content check.
Add tests for available_translations dispatch.
Disable flaky cms test.
Add  w/o english transcript tests.
Add to changelog.

Fixed confusing docstring

missed rst

CSS changes regarding TinyMCE in annotation tool & accessibility issues

Support publishing of nested xblocks

Allow uppercase transcripts srt extension.

Fix split_test xblock so that it can render in Studio