Add theme name to style.css and fix about.php array bug

Wordpress needs a theme name added to style.css (we're using version 3.9 in production at the moment).

Additionally, there was an about.php array bug that caused the first element of the $output array to include all volunteers, which had the display effect of the first section displaying everyone with no section name, followed by the properly formatted sections. Bug fix is temporary, a permanent one is needed.