Bugfix certificates request queue HTML flattening

Ahodges/documentation/doc307

Annotation Tool: Urgent update for ChinaX AB Testing

Remove duplicates in a class list so tests aren't duplicated

Update ddt to 0.8.0

Annotation Tools: Fix delete bug and factor out xmodule settings

Removed print context

Extract i18n strings from *.underscore files using django-babel-underscore

Skip video cc test BLD-1115

Reformats markdown problem templates avoid extra line breaks.

Add support for search spell corrections to Forums UX.

Co-authored-by: Brian Talbot <btalbot@edx.org>

JIRA: FOR-591

This reverts commit 9e9e69ac.

- Fixed camel case for variable name
- Fixed indentation in imageannotation.html
- Changed all mentions of Instructor Username to Email
- Turned annotation_mode into phrase
- Fixed indentation in imageannotation.html
- Added comments in imageannotation.html

- Changing annotation_mode in OSDA

Implement a custom editor for the split_module.

Annotation Tools PR Fixes

- forgot to overwrite the previous line

STUD-1529

Babel underscore extraction update according to @nedbat

Improve escaping in code response.

Allow the video player to work with links with redirection.

1. Add underscore.po into the merge section in config.yaml
2. Using one babel command template to construct two babel commands

Don't show duplicate JIRA tickets in the release PR table

to avoid extracting from test_root and such

Django babel underscore