Fix: fix the problem about database configuration
Finish: finish the content taught in class2 ppt
Add: add feature - remove items in the cart and empty of the cart
Add: add jquery_ui for spinner and using ajax to update cart_item's quantity in the cart
Add: finish quantity mechanism
Add: add namespace account let user see the order in the past
Finish: add account/order admin/order and finish hw2 without seeing the solution
Add: add mail mechanism, sending email to user after create order and payment sucessful
move jquery_customization.js to js folder
Finish: finish hw2 without seeing the solution
ADD: refactor code using helper and add i18n to translate the state of order
Finish: finish hw2 throw combining the solution-week2
ADD: Let user can change the order state including canceling the order and returning goods
Add: uding settingslogic to solve security issue
Add: add service object to clean out the code
Add: finish search
Add: add dev.rake to create 10 fake user
Add: add sidekiq to asynchronnously sending email to buyer