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/Player.h

@@ -40,6 +40,7 @@ class Player: public Damageable{
 
   virtual int receiveEvent(WEvent * event){return 0;};
   virtual void Render(){};
+  void loadAvatar(string file);
 };
 
 class HumanPlayer: public Player{