Ui fix

i fixed search box not line up in most browsers, only test it on IE 10, Opera 12.16, and FF Nightly 27a.
and close some unclosed tags that i found.

as for FB Share, they require to use HTML5 so i changed doctype and meta charsets then apply fix. i also change g+ to use link rel instead of querying from document.location.href, so url's would match with other API