fix richdocument

Signed-off-by: Marino Faggiana <marino@marinofaggiana.com>

iOSClient/Viewer/NCViewerRichdocument/NCViewerRichdocument.swift

@@ -45,6 +45,11 @@ class NCViewerRichdocument: UIViewController, WKNavigationDelegate, WKScriptMess
     override func viewDidLoad() {
         super.viewDidLoad()
 
+        navigationItem.rightBarButtonItem = UIBarButtonItem(image: UIImage(named: "more")!.image(color: .label, size: 25), style: .plain, target: self, action: #selector(self.openMenuMore))
+
+        navigationController?.navigationBar.prefersLargeTitles = false
+        navigationItem.title = metadata.fileNameView
+
         let config = WKWebViewConfiguration()
         config.websiteDataStore = WKWebsiteDataStore.nonPersistent()
         let contentController = config.userContentController
@@ -84,13 +89,6 @@ class NCViewerRichdocument: UIViewController, WKNavigationDelegate, WKScriptMess
 
         NotificationCenter.default.addObserver(self, selector: #selector(keyboardDidShow), name: UIResponder.keyboardDidShowNotification, object: nil)
         NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide), name: UIResponder.keyboardWillHideNotification, object: nil)
-
-        //
-        navigationItem.rightBarButtonItem = UIBarButtonItem(image: UIImage(named: "more")!.image(color: .label, size: 25), style: .plain, target: self, action: #selector(self.openMenuMore))
-
-        navigationItem.hidesBackButton = true
-        navigationController?.navigationBar.prefersLargeTitles = false
-        navigationItem.title = metadata.fileNameView
     }
 
     override func viewWillDisappear(_ animated: Bool) {