New post and general tidy-up.

* Add a post to point to my first TPG 'blog post.
* Finally commit comment changes to the tag cloud code.
* Remove 'related posts' section from 'blog articles.
* Minor re-word on Contact page.
* Bump to jQuery 1.9.1 (already outdated, need to follow up).
* Fix #2 (line-height within headings).