Studio Sass Mixin/Extend Re-Org

Studio: Revises Course Updates Nav Visual Display Issue

Fix section release acceptance test failure.

Studio internationalization

[STUD-431] Seems like the Edit/QA links in LMS are triggered by a ENABLE_LMS_MIGRAT...

Add management command to Studio for exporting all courses; useful for periodic backups of course content in Studio

[STUD-406] Fix/cdodge/unescape quote strings

change serialize_field to check for type. If value is a string, simply return that, otherwise do a json.dumps

vagrant: Always mount `node_modules` folder after Vagrant NFS mount

Added documentation to new acceptance test features and techniques

Bugfix for stanford shib

Fixed a spelling mistake. LMS-605

Jonahstanley/refactor global to world

Seems like the Edit/QA links in LMS are triggered by a ENABLE_LMS_MIGRATION feature flag. So when running as mongo-backed, set that to False

Tidy up argument parsing in release email script