For review: Citizens guide page layout

Made a couple of changes:

Commented out the FAQ logic in includes/header.html and put in new nav links. Are we thinking of doing away with the FAQ? Open to discussion.

Setup a basic document structure, which uses the same approach as the FAQ — a loop on site.categories with a category corresponding to a governing body (chattanooga, hamco, hcde and judicial) — to bring in post content to the index pages.

Please review and let me know if that's how you want it.