Fix the columns in the fetch list

admin/freeposte/admin/templates/fetch/list.html

@@ -35,6 +35,7 @@ Fetched accounts
       <td>{{ fetch.host }}</td>
       <td>{{ fetch.port }}</td>
       <td>{{ fetch.tls }}</td>
+      <td>{{ fetch.username }}</td>
       <td>{{ fetch.created_at }}</td>
       <td>{{ fetch.updated_at or '' }}</td>
     </tr>