Use the service_handled column instead of acknowledged and in_downtime

Only service_handled takes the host's state into consideration.

refs #8013

modules/monitoring/application/views/scripts/list/hosts.phtml

@@ -110,8 +110,7 @@ if ($hosts->count() === 0) {
            array(
                'host'               => $host->host_name,
                'service_problem'    => 1,
-               'service_acknowledged' => 0,
-               'service_in_downtime'  => 0
+               'service_handled'    => 0
            ),
            array('style' => 'font-weight: normal')
         ) ?>)</span>