Python3 update

INCR-471

lms/djangoapps/instructor_task/migrations/0001_initial.py

@@ -1,8 +1,8 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
-from django.db import migrations, models
 from django.conf import settings
+from django.db import migrations, models
 from opaque_keys.edx.django.models import CourseKeyField
 
 

lms/djangoapps/instructor_task/migrations/0002_gradereportsetting.py

@@ -1,9 +1,9 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
-from django.db import migrations, models
 import django.db.models.deletion
 from django.conf import settings
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):