Added separator between volume controls and friends. Also fixed indentation issues.

Follow up for #139 comment: Looks like this now.
![screen shot 2013-08-06 at 22 26 31](https://f.cloud.github.com/assets/3893828/921929/38fe4354-ff11-11e2-8b78-c548a4ed187b.png)

I also fixed my indentation errors by changing the entire project's indentation width to two (defaults to four), so this should resolve confusion with indentation for other contributors as well. Reference: http://stackoverflow.com/a/7926823