Edge case chrome bug fixed by 'clearfixing' the search container.

Fixes an edge case bug in Chrome 26 where in some situations the results `<ul>` can end up floating to the right of the search box, causing them to become hidden.

Screenshot before fix:

![Screen Shot 2013-04-12 at 23 28 20](https://f.cloud.github.com/assets/149426/375508/a2da3ab4-a3c0-11e2-8201-194562dc2416.png)