removing re-added contact::special_attributes procs because they were moved to to callbacks in the contacts-callback-procs.tcl file, also cleaning up flush proc and making it much cleaner.
Adding ability to delete items from a contacts history which includes a new table. There is an associated parameter DeleteHistoryPermission that controls who can delete history items. Admins can automatically delete any history item.
adding contact::search::query_clauses callback to contact::search::query_clause to let sites customize how text entry queries on the main contacts page are handled
Escapte title so its evaluated in the proper place instead of regsub since evaluation the var at the correct level is safer (and consistnet with the rest of the code in assessment package.)
