OpenStack glance support in Docker Registry
Fixed image list
Added support for signals in order to implement hooks in the storage modules
Now supports tagging images names on the layer stored in Glance
Fixed typos
Re-factored the glance storage dispatcher
Added missing requirement
Provide sample config for openstack
Simplified a "if" in images module
Disabled tarsum debug for better visibility
Set of bugfixes on the glance storage module, it now works.
Removed unused code
Cleanup confusing comment
Rebased master
Merge branch 'storage-glance'
Bumped version to 0.5.8