Fix hosts without services being displayed in the servicematrix

refs #4180

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

@@ -30,6 +30,7 @@
         <tbody>
 <?php $hasHeader = true; ?>
 <?php endif ?>
+<?php if (count(array_filter(array_values($serviceStates)))): ?>
             <tr>
                 <th>
                     <a href="<?= $this->href('monitoring/show/host', array('host' => $host_name)); ?>">
@@ -53,6 +54,7 @@
                 </td>
 <?php endforeach ?>
             </tr>
+<?php endif ?>
 <?php endforeach ?>
         </tbody>
     </table>