             navigationItem.leftBarButtonItem = editButtonItem
         }
     }
-    
+
     // MARK: UIImagePickerControlDelegate
-    
+
     func imagePickerController(_ picker: UIImagePickerController,
                                didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
         dismiss(animated: true, completion: nil)
-        
+
         guard let selectedQRCode = info[UIImagePickerController.InfoKey.originalImage] as? UIImage,
             let detector = CIDetector(ofType: CIDetectorTypeQRCode,
                                       context: nil,


        return alertController
    }
    
    private func persistAccountOrder() {
        let sortedPersistentRefs = accounts.map { $0.persistentRef! }
        UserDefaults.standard.set(sortedPersistentRefs, forKey: accountOrderKey)

        let importQRCode = UIAlertAction(title: "Import QR Image", style: .default) { [unowned self] _ in
            self.qrImporter.allowsEditing = false
            self.qrImporter.sourceType = .photoLibrary

            if UIImagePickerController.isSourceTypeAvailable(UIImagePickerController.SourceType.photoLibrary) {
                self.present(self.qrImporter, animated: true, completion: nil)
            } else {
