Issue 494: "Valuable Collection" trophy is gone?

The check to give the award was lost in some of Jeck's reorg work (R1825), as ShopItem was deprecated & folded into GameStateShop. While at it, I took the liberty to delete ShopItem.h/cpp since they're not used.

projects/mtg/src/GameStateShop.cpp

@@ -769,6 +769,13 @@ void GameStateShop::ButtonPressed(int controllerId, int controlId)
                 purchaseBooster(sel);
             else
                 purchaseCard(sel);
+
+            //Check if we just scored an award...
+            if (myCollection && myCollection->totalPrice() > 10000)
+            {
+                GameOptionAward * goa = dynamic_cast<GameOptionAward *> (&options[Options::AWARD_COLLECTOR]);
+                if (goa) goa->giveAward();
+            }
         }
         mStage = STAGE_SHOP_SHOP;
         return;