BLD-1190: Fix bok-choy test.
Fix quotation mark & apostrophe related i18n bug

Just done by using the escapejs function :)
Merge pull request #4347 from louyihua/studio-advanced-settings-localization

Fix quotation mark & apostrophe related i18n bug
Merge pull request #4441 from edx/anton/fix-flaky--bok-choy-test

Video: fix flaky bok-choy test.
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.
Merge pull request #4349 from louyihua/localization-cms

Make TinyMCE editor translatable
Split get_courses_for_wiki impl
LMS-2914
Check if fields is None before updating search targets
Try moving mongo tests to mixed
get_courses_for_wiki return course_keys across all modulestores
Fix for double course version