Fix tests on django versions <1.6

Author: aburgel

tests/runtests.py

@@ -13,6 +13,10 @@ def runtests(foo, settings='settings', extra=[], test_builtin=False):
     if not test_builtin:
         apps = filter(lambda name: not name.startswith('django.contrib.'),
                       apps)
+    # pre-1.6 test runners don't understand full module names
+    import django
+    if django.VERSION < (1, 6)
+        apps = [app.replace('django.contrib.', '') for app in apps]
     execute(['./manage.py', 'test', '--settings', settings] + extra + apps)