[#1647] Stats extension. 'Largest Groups' links lead either to organi…

…zations or to groups page

Currently all links under the 'Largest Groups' refer to groups page.

After this change links refer to group page for groups and to organization page for organizations

ckanext/stats/templates/ckanext/stats/index.html

@@ -117,7 +117,7 @@ <h2>{{ _('Largest Groups') }}</h2>
           <tbody>
             {% for group, num_packages in c.largest_groups %}
               <tr>
-                <td>{{ h.link_to(group.title or group.name, h.url_for(controller='group', action='read', id=group.name)) }}</td>
+                <td>{{ h.link_to(group.title or group.name, h.url_for(controller=group.type, action='read', id=group.name)) }}</td>
                 <td class="metric">{{ num_packages }}</td>
               </tr>
             {% endfor %}