Request: dropdown folder list enhancements

[therealjd]

When selecting the 'dropdown' list from the address bar, for long lists, it would be nice to have the scroll wheel support scrolling so you dont have to click on the arrows to go up and down the list.

Also, it would be nice if the folders could have arrows that expand to subfolders like the 'send to' in explorer's context menu. It's a very fast way to navigate folder structures.

Thanks!