3.0 - Begin updating views section of tutorial, array short syntax, post to article

* Started on the Views section of the blog tutorial.
* Update table creation to be articles instead of posts
* Replaced instances of post(s) with article(s)
* Updated code examples (not all are entirely accurate with recent FormHelper/ORM, etc updates... but a small step in the right direction)
* Updated some grammar
* Use short array syntax