diff --git a/core/modules/system/lib/Drupal/system/Controller/ConfigController.php b/core/modules/system/lib/Drupal/system/Controller/ConfigController.php
new file mode 100644
index 0000000..d50f60d
--- /dev/null
+++ b/core/modules/system/lib/Drupal/system/Controller/ConfigController.php
@@ -0,0 +1,99 @@
+<?php
+
+/**
+ * @file
+ * Definition of Drupal\system\Controller\ConfigController.
+ */
+
+namespace Drupal\system\Controller;
+
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Drupal\Core\ControllerInterface;
+use Drupal\system\SystemManager;
+
+/**
+ * Controller for system configuration page.
+ */
+class ConfigController implements ControllerInterface {
+
+  /**
+   * System Manager Service.
+   *
+   * @var \Drupal\system\SystemManager
+   */
+  protected $systemManager;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('system.manager')
+    );
+  }
+
+  /**
+   * Constructs a SystemInfoController object.
+   *
+   * @param \Drupal\system\SystemManager $systemManager
+   *   System manager service.
+   */
+  public function __construct(SystemManager $systemManager) {
+    $this->systemManager = $systemManager;
+  }
+
+  /**
+   * Menu callback; Provide the administration overview page.
+   */
+  public function overview() {
+    // Check for status report errors.
+    if ($this->systemManager->checkRequirements() && user_access('administer site configuration')) {
+      drupal_set_message(t('One or more problems were detected with your Drupal installation. Check the <a href="@status">status report</a> for more information.', array('@status' => url('admin/reports/status'))), 'error');
+    }
+    $blocks = array();
+    if ($system_link = entity_load_multiple_by_properties('menu_link', array('link_path' => 'admin/config', 'module' => 'system'))) {
+      $system_link = reset($system_link);
+      $query = \Drupal::entityQuery('menu_link')
+        ->condition('link_path', 'admin/help', '<>')
+        ->condition('menu_name', $system_link->menu_name)
+        ->condition('plid', $system_link->id())
+        ->condition('hidden', 0);
+      $result = $query->execute();
+      if (!empty($result)) {
+        $menu_links = menu_link_load_multiple($result);
+
+        foreach ($menu_links as $item) {
+          _menu_link_translate($item);
+          if (!$item['access']) {
+            continue;
+          }
+          // The link description, either derived from 'description' in hook_menu()
+          // or customized via menu module is used as title attribute.
+          if (!empty($item['localized_options']['attributes']['title'])) {
+            $item['description'] = $item['localized_options']['attributes']['title'];
+            unset($item['localized_options']['attributes']['title']);
+          }
+          $block = $item;
+          $block['content'] = '';
+          $block['content'] .= theme('admin_block_content', array('content' => system_admin_menu_block($item)));
+          if (!empty($block['content'])) {
+            $block['show'] = TRUE;
+          }
+
+          // Prepare for sorting as in function _menu_tree_check_access().
+          // The weight is offset so it is always positive, with a uniform 5-digits.
+          $blocks[(50000 + $item['weight']) . ' ' . $item['title'] . ' ' . $item['mlid']] = $block;
+        }
+      }
+    }
+    if ($blocks) {
+      ksort($blocks);
+      return theme('admin_page', array('blocks' => $blocks));
+    }
+    else {
+      return t('You do not have any administrative items.');
+    }
+  }
+
+}