added Base::is_lab_staff() method; access to lab test history now restricted to lab staff; C::Roles::DataMap::user_locations_map uses user_locations table instead of email_contacts table so that non-network users get a new diagnosis list

moved authen_config from lims_config.pl to main LIMS app - CUSTOM callback doesn't work when cfg loaded using Class::Singleton instance; modified idle timeout function to automatically load logged-in username in login screen, so only passwd required, and added link to logout if different user; cgiapp_prerun checks form param username matches authen; added region_code back to user_locations + admin functions