BUG: Fix select from files treedropdown

nolabel styles were messing up the treedropdown

Before:
![old_tree](https://f.cloud.github.com/assets/984753/563710/581ed4de-c504-11e2-9c18-506f58cf1ca9.png)

After:
![new_tree](https://f.cloud.github.com/assets/984753/563711/5a5312ba-c504-11e2-9479-3e7bfc8a96c3.png)