Added Amazon Pay


We have added Amazon Pay as a payment option. We previously had Amazon Pay as a payment method a few months ago. This had to be removed due to issues with Amazon sending old e-mail addresses associated with their Amazon account. This would lead to a lot of customer service because the customer would not receive any emails and could not login to their account. We have solved this issue, so we have put it back as a payment method.

We have also made some user interface changes to the purchase page to make it more clear.