Add checkout route to routes.rb
Add checkout action to orders controller
Add checkout view
Rename orders.js.coffee to orders.js
Add convert_path to routes.rb
Add actions to orders controller:

- convert_cart_to_order
- checkout
Add "checkout" button to checkout page
Remove comments from orders.js file
Add confirmation view to orders
Add confirmation route and correct convert path
Modify checkout button
Add processed_at date to cart conversion process
Add gray text color to debugger text