moved search term highlighting in referral resource finder to a callback so html is escaped first, then search term highlighted; speeded up Excel file search in L::Local::ExcelHandler::_read_file() using add_trigger()
fixed circular ref inside C::Admin::Config::OutreachPractices; added 'skip_wrapper' flag for shared resource practice/clinician/GP/etc lookup function when called as popup; re-arranged some resources urls
