Add content type list API view to the common app.

mayan/apps/common/tests/test_api.py

@@ -0,0 +1,11 @@
+from __future__ import unicode_literals
+
+from django.core.urlresolvers import reverse
+
+from rest_framework.test import APITestCase
+
+
+class CommonAPITestCase(APITestCase):
+    def test_content_type_list_view(self):
+        response = self.client.get(reverse('rest_api:content-type-list'))
+        self.assertEqual(response.status_code, 200)