Permission not checked in TicketQuery

[cboos]

The [[TicketQuery]] macro fails to check for TICKET_VIEW permission while displaying tickets, in count, list or compact mode.

table mode is fine.

[cboos]

(after #216)

[cboos]

Actually, on of the base assumption of #216 (using select count(*) from (...)) is not correct w.r.t. fine-grained permissions.

[cboos]

Hm, the other assumptions (using LIMIT and OFFSET in the actual query) are wrong in that respect as well.

[cboos]

Fixed in r6911 after some preparatory changesets.

See in particular r6910 - I think the TicketQuery macro should use Query.count. Fixing the count itself to check the permissions is easy, but avoiding the use of LIMIT and OFFSET is a bit more involved, so I'll defer that to after the rc1.