Completed styling of blog

Styling of the blog was completed. Common styles between about.css and
style.css were transferred over to style.css. Unused CSS was cleaned
up and header colours were changed to be more in line with the visual
consistency of the site. The new structure for the site was also
propogated to the individual blog post pages. Last page remaining
would be the projects page. For now I might just link it across to my
public trello board.