Min num of sources filter, initialization scripts, docker ready to use dev mode

app_urls/fetcher/templates/url_detail.html

@@ -198,7 +198,7 @@
             </tr>
             <tr>
                 <th>Status</th>
-                <td>{{ url_item.status }}</td>
+                <td>{{ url_item.status }} {% if url_canonical != None %}<a href="/urls/{{ url_canonical.id }}" target="_blank">[{{ url_canonical.id }}]</a>{% endif %} </td>
             </tr>
             <tr>
                 <th>URL host</th>