Adding $refundPath and createRefundtoken to tokenFactory
Adding refund action to Paypal Pro Checkout
Adding Refund to api.php
Adding Refund to Payment Factory
Adding a note about Refunds on UPDAGRADE.md
Changing refundPath to last position of Signature
Making afterPath optional on createRefundToken
Calling refundPath on TokenFactory parent contructor call
Correcting TokenFactory calls on tests
Correcting GenericTokenFactory calls on tests
Passing refundPath to parent contructor call on GenericTokenFactory
Making afterPath optional on Token Factory interface
Refactoring api options array, making setOptions generic. Rebasing #227
Calling correct doCredit api method name, removing Request class and returning array on execute
[payment] remove all addXXX methods from PaymentInterface.
update upgrade.md with removed methods from payment interface.
Merge pull request #230 from formapro-forks/payment-cleanup-inteface

[payment] remove all addXXX methods from PaymentInterface.
[security] allow keep previoust payum token or do not add it to after url.
[paypal-pro] refund.
[security] set explistly amount of explode parts.