Fix SQL query that selects ticket summary data, was making getTicketsR fail

src/Vervis/Ticket.hs

@@ -61,7 +61,10 @@ getTicketSummaries mfilt morder jid = fmap (map toSummary) $ select $ from $
         on $ tal ?. TicketAuthorLocalAuthor ==. p ?. PersonId
         on $ just (t ^. TicketId) ==. tal ?. TicketAuthorLocalTicket
         where_ $ t  ^. TicketProject ==. val jid
-        groupBy $ t ^. TicketId
+        groupBy
+            ( t ^. TicketId, s ?. SharerId
+            , ra ?. RemoteActorId, i ?. InstanceId
+            )
         for_ mfilt $ \ filt -> where_ $ filt t
         for_ morder $ \ order -> orderBy $ order t
         return