Fix url helper to work also in console applications. (#1416)

module/VuFind/src/VuFind/View/Helper/Root/Url.php

@@ -52,7 +52,7 @@ class Url extends \Zend\View\Helper\Url
      *
      * @param Request $request Request object for GET parameters
      */
-    public function __construct(Request $request)
+    public function __construct(Request $request = null)
     {
         $this->request = $request;
     }
@@ -95,7 +95,8 @@ class Url extends \Zend\View\Helper\Url
      */
     public function addQueryParameters($params, $reuseMatchedParams = true)
     {
-        $requestQuery = $this->request->getQuery()->toArray();
+        $requestQuery = (null !== $this->request)
+            ? $this->request->getQuery()->toArray() : [];
         $options = ['query' => array_merge($requestQuery, $params)];
         return $this->__invoke(null, [], $options, $reuseMatchedParams);
     }

module/VuFind/src/VuFind/View/Helper/Root/UrlFactory.php

@@ -59,7 +59,11 @@ class UrlFactory implements FactoryInterface
     public function __invoke(ContainerInterface $container, $requestedName,
         array $options = null
     ) {
-        $helper = new $requestedName($container->get('Request'));
+        $request = $container->get('Request');
+        if (!($request instanceof \Zend\Http\PhpEnvironment\Request)) {
+            $request = null;
+        }
+        $helper = new $requestedName($request);
         $helper->setRouter($container->get('HttpRouter'));
 
         $match = $container->get('Application')