Bug when expanding empty folders

1. User tries to expand a folder -- the folder is empty
2. We tell GtkTreeView to expand that row -- who knows if it actually does
3. Because the user expanded the folder a new watcher is set for that folder
4. If a new file is created inside that folder the watcher will insert it
5. Finally, one would expect the previously expanded folder to display it's recently created content. What actually happens is that nothing is displayed and to see the new content the user must expand/collapse that folder twice before seeing the content