modified print_run to get initial calculation of total number of records requested, then present a list of smaller print runs if max print run size exceeded
HMRN treatment validation checks end_date not before start_date; protected Utils::to_datetime_using_datecalc() DT object creation with eval in case Decode_Date_EU fails eg if using validation FV_and()
local changes for Bristol update: emailed messages contain test notice only if not in production; unreported requests worklist duration taken from config settings; config settings made available to Model classes; moved report output formatting to local template if not RR8
