fix hide empty matches

tournaments/models/tournament.py

@@ -292,7 +292,8 @@ class Tournament(models.Model):
 
         if matches:
             round_matches = round.match_set.all()
-            round_matches = [m for m in round_matches if m.should_appear()]
+            if hide_empty_matches:
+                round_matches = [m for m in round_matches if m.should_appear()]
 
             group = self.create_match_group(round.name(), round_matches, broadcasted)
             groups.append(group)