Fixing an issue with created volume types.

If someone provides a custom description, provisioning with this
volume type will fail. All custom properties need to be prefixed
to avoid this problem.
Merge pull request #24 from JohnPostlethwait/volume_type_fix

Fixing an issue with created volume types.
Bumping version
Adds experimental support for processing RPC notification data
Lots of changes to better support multiple networks
Remove combined delete/disassociate due to potential security impact
Fix a bug in floating IP add_to_instance method
Keystone v3 improvements.

Managers for project group membership, project user membership, project combined membership (users and groups);
for group project membership, group users, group roles; for user project membership, user roles.
assignable_type -> type
Merge pull request #27 from maseb/keystone-v3-improvements

Keystone v3 improvements.
Adds shortcut for simple boot-from-volume case