Added Ajax Support for change of Ticket type

If you change the ticket type, for example in AgentTicketNote, a
present ACL (If TicketType = 'Foo’ then Queue could only be
'Postmaster‘) is not called when you change the Ticket Type in this
view. It is just called when the view is initially shown.

This commit add’s the behavior like it is in
AgentTicketEmail/AgentTicketPhone.

Regards

Johannes