[YC-269] Review Payment Gateways - www.inspire-software.com

Details

1.	PayPalExpressCheckoutFilter review	Closed	Igor Azarny
2.	GoogleNotificationDispatcherImpl perform auth transition	Closed	Igor Azarny
3.	GoogleCheckoutPaymentGatewayImpl review	Closed	Igor Azarny
4.	AbstractAuthorizeNetPaymentGatewayImpl review	Closed	Igor Azarny
5.	PaymentProcessorSurrogate review	Closed	Denis Lozenko (Inactive)
6.	Fix return URL page rendering	Closed	Igor Azarny