Change module discovery to use the one from Django

authority/__init__.py

@@ -1,3 +1,5 @@
+from django.utils.module_loading import autodiscover_modules
+
 LOADING = False
 
 
@@ -11,5 +13,4 @@ def autodiscover():
         return
     LOADING = True
 
-    from authority import utils
-    utils.autodiscover_modules()
+    autodiscover_modules('permissions')

authority/utils.py

@@ -1,26 +1,3 @@
 import sys
 
-from authority.sites import site, get_check, get_choices_for, register, unregister  # noqa
-
-
-def autodiscover_modules():
-    """
-    Goes and imports the permissions submodule of every app in INSTALLED_APPS
-    to make sure the permission set classes are registered correctly.
-    """
-    import imp
-    from django.conf import settings
-
-    for app in settings.INSTALLED_APPS:
-        try:
-            __import__(app)
-            app_path = sys.modules[app].__path__
-        except AttributeError:
-            continue
-        try:
-            imp.find_module('permissions', app_path)
-        except ImportError:
-            continue
-        __import__("%s.permissions" % app)
-        app_path = sys.modules["%s.permissions" % app]
-    LOADING = False
+from authority.sites import site, get_check, get_choices_for, register, unregister # noqa