Moved apps back in the toplevel django namespace.

from django.contrib.contenttypes import views as contenttype_views

from django.views.decorators.csrf import csrf_protect

from django.db.models.base import ModelBase

from django.core.apps import app_cache

from django.apps import app_cache

from django.core.exceptions import ImproperlyConfigured, PermissionDenied

from django.core.urlresolvers import reverse, NoReverseMatch

from django.template.response import TemplateResponse

from django.core.apps import app_cache

from django.apps import app_cache

from django.template import Library

register = Library()