Validation of menu and X-UA.. meta tags. Fixes #1 and #2

Still invalid markup.
wp_nav_menu(array( 'container' => false )) is broken on WordPress's end,
and needs to be fixed. See
http://www.scriptygoddess.com/archives/2010/10/09/wp_nav_menu-and-container-false-appears-to-not-work/