standardised all Model classes using Moose to read 'extends' then 'with'; moved M::R::ReportUpdate::_do_additional_tests to M::R::LabTest::Update::auto_request_additional_tests() for sharing with M::R::ResultsUpdate::do_results_summary_update() so result summary input can auto-request new lab tests - required reconfiguration of additional_tests.yml; changed order of result summary drop-down and textbox entries when joined to form single string