changed user message handling: * site.status.tt calls ajax/seek_new_messsages as jQuery on page load * site/status.tt calls new_messages.cgi every minute until 1 min before session timeout * set idle-timeout value in session user_profile, created at new login if no existing user profile * user session user_profile idle-timeout value in LIMS::_authen_config $authen_timeout sub * new $LIMS::Local::QueryLog::SKIP_LOG_QUERY to avoid logging specific queries (eg ajax/seek_new_messages) * updated new_messages.cgi with logging and formatted return msg to same as ajax/seek_new_messages