Bug 1093762: Restore size/space of #search-browse

The search box and the Browse button were nearer in the original design.
They were moved around when the redesign launched.

http://ternowaydesigns.com/wordpress/wp-content/uploads/2012/03/mozilla_demoStudio.jpg
Merge pull request #2889 from openjck/1093762-search-browse-spacing

Bug 1093762: Restore size/space of #search-browse