monitoring: Update controls markup in downtimes

refs #11145

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

@@ -3,13 +3,13 @@ use Icinga\Module\Monitoring\Object\Host;
 use Icinga\Module\Monitoring\Object\Service;
 
 if (! $this->compact): ?>
-<div class="controls separated">
+<div class="controls">
     <?= $tabs ?>
     <?= $this->render('list/components/selectioninfo.phtml') ?>
-    <div class="grid">
-        <?= $this->sortBox ?>
+    <?= $this->paginator ?>
+    <div class="sort-controls-container">
         <?= $this->limiter ?>
-        <?= $this->paginator ?>
+        <?= $this->sortBox ?>
     </div>
     <?= $this->filterEditor ?>
 </div>