added: a new message sent by editticket when closing a ticket:
#define WINIX_PL_TICKET_CLOSED 4105
// a ticket has been closed (closed button pressed)
// in p1 you have a pointer to the Item struct
// in p2 you have a pointer to the Ticket struct
git-svn-id: svn://ttmath.org/publicrep/winix/trunk@909 e52654a7-88a9-db11-a3e9-0013d4bc506e