Change icon of notifications

aleksis/core/templates/core/notifications.html

@@ -13,7 +13,7 @@
           <span class="badge new primary-color">{{ notification.sender }}</span>
           <span class="title">{{ notification.title }}</span>
           <p>
-            <i class="material-icons left">access_time</i> {{ notification.created }}
+            <i class="material-icons iconify left" data-icon="mdi:clock-outline"></i> {{ notification.created }}
           </p>
           <p>
             {{ notification.description|linebreaks }}