configure for heroku
Learn authentication and permissions
Migrating to Redis Cloud

Adding Redis Cloud URL as conditional so that the application would
still be working until we add a plan and fork from OpenRedis
Revert "Migrating to Redis Cloud"

Redis Cloud doesn't support multiple databases per instance, so we
cannot use it, as stated in http://meta.discourse.org/t/p/6699.

This reverts commit 6cb92c9e12df22940fcbd7af87658d9458c4efab.
Fix broken sign in for non-subscriber admins

Admins don't have an active subscription, but may not have a subscriber
group, either.

https://www.apptrajectory.com/thoughtbot/learn/stories/15638700
Add Airbrake
Update to the latest discourse

* Add discourse.conf file
* Update .gitignore