Some things, like CSRF protection (`#361 </issues/361>`_), benefit
from the ability to uniformly call helpers before and after a
request is processed by the view. In the case of CSRF, we want to
confirm that the token matches before processing the view, and make
sure the token is set before delivering the response. Unlike WSGI
middleware, this sort of wrapping is an integral part of the
application.

A few tickets are blocking on being able to rip test data into the
database, and some giant put me on his shoulders and then I saw the
promised land of test fixtures. We need to support test fixtures.

As I don't have any simple way to test cloud storage, I'm filing
this as a bug.


1. StorageObjectWrapper should have a close() method
2. ``process_media/__init__.py`` should use the real ``closing()``
   function from ``contextlib`` instead of the current dummy one.

I would also suggest to rename StorageObjectWrapper to include
something about CloudFiles.