Summary: Make sure the TEMPLATE_LOADERS dev hack produces a tuple,

otherwise the tests barf
 - Legacy-Id: 8989

Author: OleLaursen

ietf/settings.py

@@ -498,7 +498,7 @@ def skip_unreadable_post(record):
 # publicly available, for instance from the source repository.
 if SERVER_MODE != 'production':
     # stomp out the cached template loader, it's annoying
-    TEMPLATE_LOADERS = [l for e in TEMPLATE_LOADERS for l in (e[1] if isinstance(e, tuple) and "cached.Loader" in e[0] else (e,))]
+    TEMPLATE_LOADERS = tuple(l for e in TEMPLATE_LOADERS for l in (e[1] if isinstance(e, tuple) and "cached.Loader" in e[0] else (e,)))
 
     CACHES = {
          'default': {