overrided answer delete to update participant points
Removed test banks
Removed testbank, refer to module, migrations
Updated models, admin to add course to test bank many to many
Migrations to add multiple relation and move course to courses
Removed course field from admin
Deleted course field from module migration
Updated tests
Merge branch 'develop' into feature/issue-45-remove-test-back-ver2
Fixed tests for merge with develop
Merge pull request #83 from praekelt/feature/issue-45-remove-test-back-ver2

Feature/issue 45 remove test back ver2