First attempt to reduce load time of player deck selection screens.

This change makes use of caching the DeckStats and DeckStatsWrappers into singleton caches that
get flushed when you quit the game.  The initial load time will be significant as lazy loading has not
been coded yet for the ai decks.

TODO: lazy load the player and ai decks as they appear on the screen.  Currently, each screen loads
all decks.

projects/mtg/src/GameStateDuel.cpp

@@ -83,7 +83,6 @@ GameStateDuel::GameStateDuel(GameApp* parent) :
 GameStateDuel::~GameStateDuel()
 {
     End();
-
 }
 
 void GameStateDuel::Start()
@@ -156,7 +155,6 @@ void GameStateDuel::Start()
     {
         mPlayers[i] = NULL;
     }
-
 }
 
 void GameStateDuel::loadPlayer(int playerId, int decknb, int isAI)
@@ -231,15 +229,14 @@ void GameStateDuel::End()
     DebugTrace("Ending GameStateDuel");
 
     JRenderer::GetInstance()->EnableVSync(false);
-    DeckManager::EndInstance();
-
+  
     if (!premadeDeck && mPlayers[0] && mPlayers[1]) // save the stats for the game
         mPlayers[0]->End();
     else if ( !mPlayers[1] && mPlayers[0] )
         // clean up player object
         SAFE_DELETE( mPlayers[0] );
+    GameObserver::EndInstance(); // this will delete both player objects if a game has been played
 
-    GameObserver::EndInstance(); // this will delete both player objects
     game = NULL;
     premadeDeck = false;
 
@@ -248,7 +245,6 @@ void GameStateDuel::End()
         mPlayers[i] = NULL;
         deck[i] = NULL;
     }
-
     SAFE_DELETE(credits);
     SAFE_DELETE(rules);