Beautifying the blog
 - Finished the blog post layout page (_layouts/post.html)
 - Updated a few entries to use this new layout
 - Collapsed the years down into a new menu on the side
 - Added chevrons to indicate menus expand
Beautified the blog somewhat
 - Finished off the post layout of (_layouts/post.html)
 - Applied the layout to some articles
 - Collapsed the browse by year menu
 - Added chevrons to new menus to indicate the expand

TODO:
 - Make chevrons change to up arrows for collapse
Merge pull request #3 from graymalkin/blogChanges

Blog changes