ERwan

-fix issue 297
- also removed the "untapBlockers" system. The idea was nice but incorrectly implemented, and only 2 cards were using it so far.

projects/mtg/include/GameObserver.h

@@ -31,6 +31,7 @@ class GameObserver{
 
   int nbPlayers;
   int currentPlayerId;
+  int untap(MTGCardInstance * card);
 
  public:
   CombatStep combatStep;