Added an alignment option to the shortcode and widget. The image will now expand to fill 100% of the Tuxquote div container. Refactored tuxquote.php to Wordpress standards.

git-svn-id: https://plugins.svn.wordpress.org/tuxquote/trunk@992307 b8457f37-d9ea-0310-8a92-e5e31aec5664