added skipped_lab_tests & added_lab_tests arrays to M::Roles::ScreenUpdate::do_new_lab_tests to return outcome info to Controllers; replaced 3 object attributes with 2 LIMS::DB queries in M::Roles::ScreenUpdate::_have_required_sample_type_for_lab_test(); ErrorHandler uses L::Model::Email instead of L::Local::Mail - supplies required _app_cfg - email-admin function now works
new tables sample_types, lab_section_sample_type & specimen_sample_type; added sample-type data to lab sections and specimens configuration functions; replaced arg to ErrorHandler::set_errorhandler_args with L::Local::Config->instance, as used in QueryLog
