added cleanboard

src/backend/Board.java

@@ -71,8 +71,9 @@ public class Board {
 		  }
 	} 
 	
-	public void cleanBoard() {
-		this.populateBoard(); // not sure at all
+	public void cleanBoard() { 
+		this.board = new Piece[width][height]; // should work ?
+	    //this.isTurnWhite = true;
 		}
 	
 	public String toString() {