Add ShopMenu.js

Signed-off-by: Gaurav Munjal <Gaurav0@aol.com>
Add BuyMenu.js

Signed-off-by: Gaurav Munjal <Gaurav0@aol.com>
Add SellMenu.js

Signed-off-by: Gaurav Munjal <Gaurav0@aol.com>
Forgot to run build

Signed-off-by: Gaurav Munjal <Gaurav0@aol.com>
First try at rewriting Shop.js

Signed-off-by: Gaurav Munjal <Gaurav0@aol.com>
Basic fixes for Shop Menu

Signed-off-by: Gaurav Munjal <Gaurav0@aol.com>