Add handful of events to the Segment.io whitelist

Greater dir naming flexibility.

New course creator group.

Fix LMS-500: Random class in random module was None

Moves user activation from just clicking on reset password to following the link in the password reset email

Specify a different xcontent mongo db for the acceptance tests

Don't mention edge in the subject line; use same message for edx and edg...

Cleanup before adding external grader

Fixed Jasmine tests in light of Logger changes, and wrote test to cover case where data passed is not a dictionary

Updated diff-cover to version 0.1.3 to fix a bug

Jonahstanley/make units parallel

Deleting the module object isn't needed to replace it, and deleting
a module object causes all of its attributes to be set to None.

Refactor a bit modx_dispatch

Update CHANGELOG for per-student problem rescoring.

Call event.preventDefault() on notification action buttons

But allow you to specify that the event should not be prevented

Fix unicode for errors on capa problems

removes choiceresponse wiping after clicking Show Answer

Enable per-student background tasks.

Fix acceptance tests expecting outdated CSS.