Update machine view with new hover and drop states

Updated with new hover and drop states as seen here: https://docs.google.com/a/canonical.com/file/d/0B7XG_QBXNwY1eF82Z3d5MllQNHM/edit

When dropping a unit on a container it would not update the token so that has been fixed also.
I used `agent_state` to check if this unit has been deployed. There is a probably a better way to do this...