124 update storage for repose

Neither Deuce or any storage drivers should save any user credentials or storage URL.

All requests provide token in the header x-auth-token and storage URL in the header x-storage-url, which should be filled up by Repose instead of the users.   Unittests reflect the requests behind (/after) Repose.  


Please put the 'x-storage-url' in a separate hook.