 
     progressView.tintColor = UIColor.white()
     updateProgress()
-    navigationItem.hidesBackButton = true;
-    navigationItem.rightBarButtonItem = UIBarButtonItem(title: L("core_exit"), style: .plain, target: self, action:  #selector(goBack))
+    let backButton = UIBarButtonItem(image: UIImage(named: "ic_nav_bar_back"),
+                                  style: .plain,
+                                  target: self,
+                                  action: #selector(onBack))
+    navigationItem.leftBarButtonItem = backButton
   }
 
   override func viewDidAppear(_ animated: Bool) {

      }
    }
    super.init(url: catalogUrl, title: L("guides_catalogue_title"))!
    backButton = UIBarButtonItem(image: UIImage(named: "ic_nav_bar_back"),
                                  style: .plain,
                                  target: navigationController,
                                  action: #selector(onBack))
    navigationItem.leftBarButtonItem = backButton
    noInternetView = CatalogConnectionErrorView(frame: .zero, actionCallback: { [weak self] in
      guard let self = self else { return }
      if !FrameworkHelper.isNetworkConnected() {

  var deeplink: URL?
  var categoryInfo: CatalogCategoryInfo?
  var statSent = false
  var billing = InAppPurchase.inAppBilling()
  var noInternetView: CatalogConnectionErrorView!

