Event Grid: Add header

refs #7976

modules/monitoring/application/controllers/ListController.php

@@ -717,6 +717,7 @@ class Monitoring_ListController extends Controller
     private function createTabs()
     {
         $tabs = $this->getTabs();
+        $tabs->setTitle($this->translate('Monitoring Navigation'));
         if (in_array($this->_request->getActionName(), array(
             'hosts',
             'services',

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

@@ -2,18 +2,20 @@
 use Icinga\Data\Filter\Filter;
 use Icinga\Web\Widget\Chart\HistoryColorGrid;
 ?>
-
-
 <? if (! $compact): ?>
     <div class="controls">
         <?= $this->tabs->render($this); ?>
         <div class="fake-controls">
+            <h2 tabindex="-1" class="sr-only">
+                <?= $this->translate('Filters'); ?>
+            </h2>
             <?= $form ?>
         </div>
     </div>
 <? endif; ?>
 
 <div class="content" data-base-target="_next">
+    <h1 tabindex="-1"><?= $this->translate('Event Grid') ?></h1>
 <?php
 
 $settings = array(