MAGETWO-37843: All responsive email templates in Blank Theme

- fixed failing integration tests

Author: David Alger

dev/tests/integration/testsuite/Magento/Customer/Controller/Adminhtml/IndexTest.php

@@ -795,6 +795,9 @@ public function testMassUnsubscriberAction()
         $subscriberFactory->create()->subscribeCustomerById(2);
         $this->getRequest()->setParam('customer', [1, 2]);
 
+        // Ensure secret key is disabled (subscription status notification emails turn it off)
+        $this->_objectManager->get('Magento\Backend\Model\UrlInterface')->turnOffSecretKey();
+
         // Test
         $this->dispatch('backend/customer/index/massUnsubscribe');
 
@@ -856,6 +859,9 @@ public function testMassUnsubscriberActionPartialUpdate()
         $subscriberFactory->create()->subscribeCustomerById(2);
         $this->getRequest()->setParam('customer', [1, 4200, 2]);
 
+        // Ensure secret key is disabled (subscription status notification emails turn it off)
+        $this->_objectManager->get('Magento\Backend\Model\UrlInterface')->turnOffSecretKey();
+
         // Test
         $this->dispatch('backend/customer/index/massUnsubscribe');