Merge pull request #24 from kravietz/master

CSP report changes
Update FakeHttpRequest with all the info we need.

Tests were failing because we were missing expected Meta values.
Tidy up imports and move FakeHttpRequest class.

We only use it in the CSP tests, so it's now there.
SessionExpiryPolicyMiddleware should logout user.

We were clearing the cache, but this won't actually log out the user. We
should call the logout function from contrib.auth which handles all the
work of logging out a user.
Update version of library.
MANIFEST was incorrect.

We were building junky releases. We being me.
get rid of DeprecationWarning on django.conf.urls.defaults