Put WebWork in an iframe
Lay down base for WebWork integration
Refactor, actually create records
Keep working on integration
Merge branch 'iframes' into webwork_integration

Conflicts:
	app/controllers/courses_controller.rb
	db/schema.rb
Login works
More webwork integration
Merge branch 'master' into webwork_integration
Clean for PR
Restore some changes
merge webwork_integration into master, fixes #81