patched comment history to return app warning if no entry found in request_report_history table - was generating fatal error; fixed all syntax errors in _get_request_status_query_args
changed result_summary_opts from AoA to HoA in C::Roles::ResultHandler::process_raw_lab_test_data() to make hadnling optgroup in template easier; result/default.tt handles optgroup and numerical order in construction of select menus; re-authentication sets flash message if user email address empty; fixed some html syntax errors in templates
modified LIMS::cgiapp_prerun() to check for new messages after re-authentication - will mainly benefit external users where idle timeout equals ajax poll new msgs frequency, so will never see ajax notification
moved ajax method of seeking new messages into separate script to avoid updating app session atime value; patched cron expire_sessions.pl - had stopped working
