new: [UI] Show threat level icons on event index

app/View/Elements/Events/eventIndexTable.ctp

@@ -91,7 +91,7 @@
             </td>
         <?php endif; ?>
         <td style="width:30px;">
-            <a href="<?php echo $baseurl."/events/view/".$event['Event']['id'] ?>"><?php echo $event['Event']['id'];?></a>
+            <a href="<?= $baseurl."/events/view/".$event['Event']['id'] ?>" class="threat-level-<?= strtolower($event['ThreatLevel']['name']) ?>"><?= $event['Event']['id'] ?></a>
         </td>
         <td class="short">
             <?php

app/webroot/css/main.css

@@ -2621,7 +2621,6 @@ table tr:hover .down-expand-button {
     font-weight: 900;
     -moz-osx-font-smoothing: grayscale;
     -webkit-font-smoothing: antialiased;
-    display: inline-block;
     font-style: normal;
     font-variant: normal;
     text-rendering: auto;