@Board.java Changed getValidLocations(piece) to add a possible overtake
location for the piece attempting to move. Also added capabilities of
overtaking pieces on the board
@ChessLogic.java Made the lists of each teams pieces update based on if
another piece has overtaken another piece.
@PieceButton.java Something....
@Piece.java Added abstract method of getTeam in order to be able to
acsess what team a piece is on
@TestPiece.java Added getTeam() to comply with changes to Piece.java