modify ui, change filters to table layout and decrease header buttons size

Better layout that will allow us to add a search results area more seamlessly. Filters now take up less area.  

![Screen Shot 2013-02-09 at 8 51 28 PM](https://f.cloud.github.com/assets/469363/142921/b540d568-733d-11e2-8720-4fd818c7eace.png)

![photo 3 ](https://f.cloud.github.com/assets/469363/142924/4b18d004-733e-11e2-9b30-8e390d9fe083.PNG)