This means it's no longer GCS-specific, and can be tested using the local
storage implementation.
Required implementation of a rename operation. To mirror Google's API, I've
implemented the renaming of a Blob as a function on the Bucket class.
To me this makes sense, as it requires creating a new Blob instance, which
shouldn't be done by another Blob.
Refactor of pillar-server and pillar-web into a single python package. This
simplifies the overall architecture of pillar applications.
Special thanks @sybren and @venomgfx
