Added created_at and updated_at fields to BlogPost model.
Added next and previous properties to BlogPost model.
Added next and previous links to blog post template.
BlogPost next and previous should be limited to posts with the same parent.
Fixed history.back madness in webkit.
Closes #2 - menu section intro now optional.
argh heroku
moved package.json so heroku doesn't think we're a node app
debugging heroku