Added ticket evets to TicketWatch*(), fixed not deleted ticket watch infos after ticket delete, added cache for database lookup to get all ticket free text fields (takes up to 10 sek, on lage installations.).
Added ticket evets to TicketWatch*(), fixed not deleted ticket watch infos after ticket delete, added cache for database lookup to get all ticket free text fields (takes up to 10 sek, on lage installations.).

djoudi/otrs-gitimport-test,djoudi/otrs-gitimport-test,djoudi/otrs-gitimport-test