Add support for multiple winners and update localization

lib/data/models/match.dart

@@ -155,7 +155,7 @@ class Match {
         return _getPlayersWithLowestScore().take(1).toList();
 
       case Ruleset.multipleWinners:
-        return [];
+        return _getPlayersWithHighestScore().toList();
 
       case Ruleset.placement:
         return _getPlayersWithHighestScore().take(1).toList();