[*] BO: Add free shipping to BackOffice Order

git-svn-id: http://dev.prestashop.com/svn/v1/branches/1.5.x@15551 b9a71923-0436-4b27-9f14-aed3839534dd

classes/PaymentModule.php

@@ -91,6 +91,8 @@ abstract class PaymentModuleCore extends Module
 
 		if (!$shop)
 			$shop = Context::getContext()->shop;
+		if (!$this->active)
+			die(Tools::displayError());
 		// Does order already exists ?
 		if (Validate::isLoadedObject($cart) && $cart->OrderExists() == false)
 		{