euscanwww: Watched herds/maintainers/categories panel

* Refactored templates and templatetags
* Added unfavourite views
* Added button to favourite/unfavourite package
* Panel for showing favourited objects

Signed-off-by: volpino <fox91@anche.no>

euscanwww/djeuscan/templates/euscan/_herds_table.html

@@ -0,0 +1,34 @@
+{% load url from future %}
+{% load euscan %}
+
+<table id="table" class="display">
+  <thead>
+    <th>Herd</th>
+    <th><img src="{{ STATIC_URL }}img/gentoo-icon.png" alt="gentoo" title="Versions in Gentoo" /></th>
+    <th><img src="{{ STATIC_URL }}img/overlay-icon.png" alt="overlays" title="Versions in Overlays" /></th>
+    <th><img src="{{ STATIC_URL }}img/upstream-icon.png" alt="upstream" title="Versions only upstream" /></th>
+    <th><img src="{{ STATIC_URL }}img/freshness-icon.png" title="Freshness" /></th>
+    {% if extras %}
+    <th>Graphs</th>
+    {% endif %}
+  </thead>
+  <tbody>
+  {% for herd in herds %}
+    <tr>
+      <td>
+        <a href="{% url "herd" herd.herds__herd %}">
+          {{ herd.herds__herd }}
+        </a>
+        {% package_bar herd %}
+      </td>
+      {% package_cols herd %}
+      {% if extras %}
+        <td>
+          <img src="{% url "chart_herd" herd.herds__herd 'packages-monthly-small' %}" />
+          <img src="{% url "chart_herd" herd.herds__herd 'versions-monthly-small' %}" />
+        </td>
+      {% endif %}
+    </tr>
+  {% endfor %}
+  </tbody>
+</table>