Some time in the past the WebAPI feature tests started logging errors

due to missing the _local_site_name key on the request. This was due

do the request not going through all the middleware; instead, we were

putting it through a selection of middleware -- just enough for the

tests to pass.
We were doing this because the test resource is not available in the URL

conf we give to Django (as it is temporary and for testing). Now, we

generate a URL conf for each test as we are running it and pass that to

Django instead. That way, all the requests can go through the test

client, which will put them through middleware we use.
In addition I've rewritten the language in the specified test to outline

what exactly the feature and resource are doing: they are for testing

and hence should be called TestingFeature, TestingResource, etc.

Ran unit tests.