tornevalls-resurs-bank-payment-gateway-for-woocommerce

[RWC-189] rco_payment rendered in front-end is now a part of v2, with payment method details. Fix #11.
[RWC-219] canProcessOrder setup is removed. Fix #10.
[RWC-186] Now storing payment method information per payment on orders. Fix #4.

phpstorm restructured ResursCheckout.php, ignore this.
process_payment can now properly handle payment method data as it was a normal flow.