Some Blog Improvements

If you're paying close attention, you will see I added some stuff to the sidebar to the right. You can now post something using the "Post Something New!" link. I also added a "Recent Comments" section right below the "Previous Posts" section. It's a little difficult to figure out if someone has commented on a given post, so by looking here you can see if there are new comments, and you can click on the links to see the comments.