Import and PEP8 cleanups

apps/permissions/__init__.py

@@ -3,7 +3,6 @@ from __future__ import absolute_import
 from django.contrib.auth.models import User
 from django.db.models.signals import post_save
 from django.core.exceptions import ObjectDoesNotExist
-from django.utils.translation import ugettext_lazy as _
 
 from navigation.api import bind_links, register_multi_item_links
 from project_setup.api import register_setup