Add icon to indicate if a ticket has collaborators
Track source (CC or TO) of collaborators for logging purposes
Provide facility to set collaborator status on add.
Fix logic bug
bug: Stop globbering notice sent out to collaborators
Refactor how source is added.
Merge pull request #408 from protich/feature/collaborators

Collaborators

Reviewed-By: Jared Hancock <jared@osticket.com>