yjy:add productProfile in add.html
i
yjy:Beautify the edit.erb and admin.erb
yjy:modified main.css
yjy:remove the alert when change the promotionInfo
yjy:add product detail into the database
yjy:add the function in edit.erb
Modify the profileInfo in edit.erb
yjy:fixed some bug
the profile can be added in add.html page
zj:show items whose stock>0 and show detail in item.html