+Address book selection for Checkout form ( no action yet )
fix: create address book or not algorithm ( previous set will always create new address book )
fix: create address book or not algorithm
+select Address Book will filled address form
fix: create address book or not (front end problem)
prevent double order (or more)
prevent empty order
Using session to replace shopping cart DB… (checkout does not implement yet)
+delete product from shopping cart
update checkout by using session cart