INCR-375 python3 comptatibility

openedx/core/djangoapps/ccxcon/migrations/0001_initial_ccxcon_model.py

@@ -1,7 +1,7 @@
 """
 Initial migration
 """
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 from django.db import migrations, models
 

openedx/core/djangoapps/ccxcon/migrations/0002_auto_20160325_0407.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 from django.db import migrations, models
 

openedx/core/djangoapps/ccxcon/tests/test_signals.py

@@ -2,11 +2,13 @@
 Test for contentstore signals receiver
 """
 
-import mock
+from __future__ import absolute_import
 
+import mock
 from django.test import TestCase
 from opaque_keys.edx.keys import CourseKey
-from xmodule.modulestore.django import modulestore, SignalHandler
+
+from xmodule.modulestore.django import SignalHandler, modulestore
 
 
 class CCXConSignalTestCase(TestCase):