UX: do not display invitees if we don't have any

UX: do not display invitees if we don’t have any

diff --git a/app/serializers/discourse_post_event/event_serializer.rb b/app/serializers/discourse_post_event/event_serializer.rb
index 975af93..01e7709 100644
--- a/app/serializers/discourse_post_event/event_serializer.rb
+++ b/app/serializers/discourse_post_event/event_serializer.rb
@@ -86,7 +86,7 @@ module DiscoursePostEvent
     end
 
     def should_display_invitees
-      object.status != Event.statuses[:standalone]
+      object.status != Event.statuses[:standalone] && object.invitees.count > 0
     end
   end
 end

GitHub sha: b7d30ad3