Erwan

- Reward system in Story mode (currently, either credits or random set)
- Rules now accept for player 2 to start (see story mode "block" stage)
- Story mode now has an autosave/autoload mechanism. This is for convenience but also to prevent people from abusing the reward mechanism too easily.
- possibility to choose an avatar for both players through the rules (see example in story mode)

projects/mtg/include/GameObserver.h

@@ -30,10 +30,10 @@ class GameObserver{
   queue<WEvent *> eventsQueue;
 
   int nbPlayers;
-  int currentPlayerId;
   int untap(MTGCardInstance * card);
 
  public:
+  int currentPlayerId;
   CombatStep combatStep;
   int turn;
   int forceShuffleLibraries();