[action] add generic order action.
(cherry picked from commit 6f8245d74ee9a333955a6d8a81027bde9e4f6673)

Conflicts:

	src/Payum/Paypal/ProCheckout/Nvp/PaymentFactory.php
Merge pull request #273 from formapro-forks/baackport-generic-order-action

[action] backport generic order action from master.