Daddy32: Tasks Mode

Gives the user the opportunity to earn some credits for performing various tasks.

Known bugs removed, tested stability-wise, not so much game-wise.
Lots of to-dos and ideas still remaining, better balance between task difficulty and their rewards needed - please comment.

Usage:
Enter shop, open menu, select 'See available tasks'.
All tasks in the list are active, until they expire ('Days left'; day passes after each duel (won, lost or quited)).
You can finish any of the tasks and get bonus. For particular task, the bonus gets a bit smaller every day (until expiration).

projects/mtg/include/GameStateMenu.h

@@ -44,6 +44,7 @@ class GameStateMenu: public GameState, public JGuiListener
   string getLang(string s);
   void loadLangMenu();
   bool langChoices;
+  void runTest(); //!!
  public:
   GameStateMenu(GameApp* parent);
   virtual ~GameStateMenu();