Better service management for QS 3rd party tiles

Better wrapper around the service that will handle rebinding
when it dies, binding when it becomes available, and forwarding
along all messages to the service once it binds.

Also better handling of too many services at a time.  Will only
ever bind to at most 3 tiles and will manage which ones are most
important to show based on pending clicks, last update, etc.

Change-Id: I5f4da0bc751f7eb25baa32e5c0bb9f1bc418f5bb