Backend tests

All serialisers and views currently have 100% coverage. Closes #50 (closed). As every bit of code needs tests a general test issue is not required. Code that wants to be merged into master should be completely tested anyway.

backend/core/tests/test_access_rights.py

@@ -6,6 +6,7 @@ from core.views import StudentApiView
 
 from util.factories import GradyUserFactory
 
+
 class AccessRightsOfStudentAPIViewTests(APITestCase):
     """ All tests that enshure that only students can see what students
     should see belong here """