[bugfix] link to choose from dynamic (#61)

If there is a link on a channel choose the link fails.
Now there is the type of the parent of both coose types.

Kaenx.Creator/Controls/DynamicView.xaml.cs

@@ -278,7 +278,7 @@ private void ClickEditButtonFunction(object sender, RoutedEventArgs e)
 
         private void DynChooseParaRefLink(object sender, RoutedEventArgs e)
         {
-            Models.ParameterRef paraRef = ((sender as System.Windows.Documents.Hyperlink).DataContext as Models.Dynamic.DynChooseBlock).ParameterRefObject;
+            Models.ParameterRef paraRef = ((sender as System.Windows.Documents.Hyperlink).DataContext as Models.Dynamic.IDynChoose).ParameterRefObject;
             MainWindow.Instance.GoToItem(paraRef, Module);
         }