* Add script to merge existing course instances
* Have client only send one course instance creation
* Have server return existing course instance if one for the given classroom/course exists
* Remove bandaid code from ClassroomView
https://travis-ci.org/codecombat/codecombat/builds/96076589
Failures:
1) Recalculate Achievements remove earned achievements
Message:
Expected 1 to be 0.
Stack:
Error: Expected 1 to be 0.
...
Apparently EarnedAchievement creation from previous tests bleeds into this test case.
Adding a timeout to minimize the race condition problem here.