euscanwww: update style, prefetch related, ...

Signed-off-by: Corentin Chary <corentincj@iksaif.net>

euscanwww/templates/euscan/_datatable.html

@@ -21,3 +21,15 @@
   });
 </script>
 {% endblock %}
+
+{% block menus %}
+{{ block.super }}
+<div class="menu">
+  <ul>
+    <li><img src="{{ MEDIA_URL }}img/gentoo-icon.png" /> Gentoo</li>
+    <li><img src="{{ MEDIA_URL }}img/overlay-icon.png" /> Overlays</li>
+    <li><img src="{{ MEDIA_URL }}img/upstream-icon.png" /> Upstream</li>
+    <li><img src="{{ MEDIA_URL }}img/freshness-icon.png" /> Freshness</li>
+  </ul>
+</div>
+{% endblock %}