Payment_Controller::index
Action that gets called before we interface with our payment method.
This action is responsible for setting up an order and saving it into the database (as well as a session) and also then generating an order summary before the user performs any final actions needed. This action is then mapped directly to the index action of the Handler for the payment method that was selected by the user in the "Postage and Payment" form.
Signature
public function index()