Resolve "Make exam a many to many field on StudentInfo model"

Closes #233 (closed)

functional_tests/test_export_modal.py

@@ -103,14 +103,16 @@ class ExportTestModal(GradyTestCase):
         try:
             with open(JSON_EXPORT_FILE) as f:
                 data = json.load(f)
-            self.assertEqual('B.Inf.4242 Test Module', data[0]['Exam'])
+            self.assertEqual('B.Inf.4242 Test Module', data[0]['Exams'][0]['exam']['moduleReference'])
         except Exception as e:
+            print(data)
             raise e
         finally:
             os.remove(JSON_EXPORT_FILE)
 
     def test_export_instance(self):
         fact.SubmissionFactory()
+        #fact.ExamInfoFactory()
         self._login()
         self.browser.find_element_by_id('export-btn').click()
         self.browser.find_element_by_id('export-list1').click()