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 jquery.js loading into html_wrapper and commented out all other refs to load it

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