Controller integration into the django branch
This PR makes preliminary changes for integrating the controller with the latest changes in the django branch
- mysql tables renamed as dj_*
- registry authentication using a token
- factories removed (as a side-effect it fixes #185 (closed) ;-)
- add a reddis client
- handle the new layout of job files datastore (with rails it was different)
The hard stuff will come with next pull requests ;-p