Virtual Scoring
Virtual Scoring
GameStateChangeEvent handling in GamePanel

Game board disappears when game ends. GamePanel.start(...) subscribes to
GameStateChangeEvent but doens't take into account the event type
(GAME_START).
Virtual Scoring: handle Builder turn
Merge pull request #69 from fatsu/closeGame

GameStateChangeEvent handling in GamePanel
virtual score enhancement
attach virtual score refresh to game events, invoke it once
Merge branch 'fatsu-VirtualScoring' into play-online
hide virtula score when game is over