added github link, rearranged the post-form and post-view pages to make them a little more compact.  most noticibly the reply-form on posts is off to the right of the post instead of below, and the post-form is in two columns now.
made some more layout modifications.  I've realised there's an issue with how the subcategories display on the categories page, and this commit is setting up a rollback for any changes I make that might screw things up.