moved user messages user list from 1-stage to 2-stage select menu; reverted sysmex.pl to barcode lab-numbers; bugfix: report page highlighting 'unknown patient details' expecting hash key 'previous_cases', was changed to 'previous_requests' long ago

patched C::Screen::edit() to use same screening function as used at initial screen; fixed a lot of failing tests due to new screening functions - report_status.t still failing