Accomplish the following tasks for my website - [url removed, login to view]
1. Change the back end admin console's menu text from Chinese to English (can use google translator)
2. Enable customers to login from facebook to my website (login with facebook or connect with facebook)
3. Add the "Like" & "Recommend" social plugin to every page of my website
4. Add credit card payment gateway for my website ([url removed, login to view]'s credit card payment gateway), which includes Charge, Authorize Only, and Refund operations. Enable customers to store multiple credit cards' info (credit card #, expiration date, billing address) in their account via HTTPS.
5. Enable customers and website admin to add/delete products to an existing order.
6. Enable customers and website admin to add funds to an existing order, and enable website admin to issue partial or full refund to an existing order - this must be integrated with credit card gateway if the order's payment method is "Credit Card"
Facebook Developer Guide is here: [url removed, login to view]
[url removed, login to view]'s Integration Guide is here: [url removed, login to view]