LPS-17407 - Style the Classic theme navigation for appropriate sub-menu appearance

Hey Robert,

Can you look at this pull request and try to remove that extra spacing below the selected navigation item?  I think everything else works well for this pull, but that minor bug.  I have attached an image of what I am talking about (![Screen-Shot-2013-03-12-at-1 16](https://f.cloud.github.com/assets/860951/250705/136a9dfa-8b52-11e2-9aa3-cf8d4b3555c3.jpg)).  This update can be found at http://issues.liferay.com/browse/LPS-17407.

Please let me know if you have any questions.

Thanks!

- Jon Mak