clear()-methoden im Backend

src/Backend.cs

@@ -42,6 +42,16 @@ namespace Frontend
 			Players.Remove (player.GetId ());
 		}
 		
+		public void clearPlayers ()
+		{
+			Players.Clear ();
+		}
+		
+		public void clearDragons ()
+		{
+			Dragons.Clear ();
+		}
+
 		public Player getPlayer (int playerId)
 		{
 			return Players[playerId];