[util][SanCoder] - fix some js syntax error
[util][SanCoder] - fix some test
[bug][SanCoder] - fix the count of cart is always zero in login.erb, admin.erb, etc.
[#010][SanCoder] - add second scenario of cart test
[bug][SanCoder] - fix the error calculation of item real price
fix the id dependency of promotion
delete useless code in ajax,js and rename it to getGoods.js
add count.js and remove useless js from html,besides,add promotion stage in items.html
add stock in table products
fix count.js and let already have stocks default 0
change the promotion button and fix #count problem
[010][Liu Lin] - fix show product list issue
[010][liu Lin] - add product_list.js
[010][Liu Lin] - add promotion info on product list page