Add resource revisions to the timeline and add proper templates and

rendering for resources and resource revisions (this is needed later
on for the taxonomy).
Directly link to individual resource / page revisions from the timeline
as well.

src/IDF/Wiki/Page.php

@@ -218,7 +218,7 @@ class IDF_Wiki_Page extends Pluf_Model
                              'create' => true,
                              'date' => $date)
                                                      );
-        $tmpl = new Pluf_Template('idf/wiki/feedfragment.xml');
+        $tmpl = new Pluf_Template('idf/wiki/feedfragment-page.xml');
         return $tmpl->render($context);
     }
 }