Client/Server: added kirin, houou and honou
Client: added dialog to choose extra pieces
Client: start the game by clicking start button
Client: hilight available position for extra pieces on click
Client: add selected extra pieces to ui and board
Client: when adding extra pieces, add the same piece to opponent as well
Client: removed kirin and houou from initial set
Client/Server: added shishi and changed prom of kirin to shishi
Client/Server: added dou and tetsu
Client: set fixed width to extra pieces dialog and moved to center