modify pay
modify pay request to payment post request
fix pay ctrl
change getItems to getAllItems
change getAllItems method name
merge productsManageService and itemsService to one service
delete productManagService
move getsubtotal method from ctrl to service
finish cart ctrl test
finish a part of category test
Reconstruction index
index test
finish pay test
product management test
shoppingmall test
finish shopping mall test
delete useless latter
finish product management test
finish category management test