bugfixes to bring test suite up to date - all tests (2857) pass

general bugfixes & enhancements

new HMRN view_history function; disabled ajax validation of date fields due to issue with DatePicker causing submission of previous field value

validationEngine.js

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

moved HMRN data functions to new C::HMRN; fixed error in C::Test::print_pdf - now passes hashref (not string) to make_pdf(); new DB::PatientDemographic; new rule for capitalisation of $input in LIMS::Dispatch

hilis3 conversion scripts for YHHN