code: def get_event_kind(self):
          
          slug = self.kwargs.get('kind_slug', None)
          if slug is None:
              return None  # Front page; showing all Event kinds.
          else:
              slugs_to_kinds = {v:k for k,v in Event.KIND_SLUGS.items()}
              return slugs_to_kinds.get(slug, None)
docs: Unless we're on the front page we'll have a kind_slug like 'movies'.
          We need to translate that into an event `kind` like 'movie'.