This is a squash of 38 commits ending with
5b080f979d692804452400ac5bed9b17c50b001e

Fix order of tracking backends

fixed vote bug in discussion api

Optimize OpenID Course Claims for users.

- Course overviews will cache courses upon publish.
- Added management command to warm up cache.
- OAuth2 handler returns courses via course overviews.

An incorrect response was being returned when voting for a comment
or thread.

Pin coveralls to specific version.

SOL-1199

Built a better course enrollment admin

Resolve issues with release 2015-09-15 merge to master

Hotfix/2015 09 16

The latest version is compatible with the new coverage.py.

SOL-1193: moved variables from template to view

- Updated checkout page to disallow purchase of credit seats (the credit payment page is hosted in ecommerce)
- Corrected path to providers endpoint
- Cleaned receipt page styling
- Updated receipt page copy
- Added provider thumbnail to receipt page

ECOM-2172

Rc/2015 09 15

Mako comments have to be double-hash, or they are included on the page.

fixed broken tests and quality violations

moved twitter_url to view also

escaped string for js

Add management command for granting superuser access

Bok-choy rebalance. Shard 5 is getting long comparatively.

Fix Translator comment syntax in Mako templates [TNL-3277]

Adam/patch rc with fix to fix not found

(PLAT-835)
(TNL-844)

Remove membership field from team serializer in the membership list endpoint.

Fix Mathjax rendering bug

Internationalize course re-run strings

TNL-3281

mattdrayer/signatory-title-textarea: Increase form input limit to 106…

Allows username and user email to be sent to an LTI.