[views] add descendant comments in rss item view

views.py

@@ -362,4 +362,4 @@
         self._marker('dc:date', entity.dc_date(self.date_format))
         self.render_entity_creator(entity)
         self.w(u'</item>\n')
-
+        self.wview('rssitem', entity.related('comments', 'object'), 'null')