Update site config with some of blivet's specifics.
Establish the basic layout of the site.
Show "News" as the subheader when reading blog articles.

Otherwise you get the article title both in the subheader and at the
start of the article in the content/body, which is silly and confusing.
Remove some redundant stuff from pages.html.haml.

None of this was being displayed anywhere.
Various changes to the site-wide stylesheet.

Darken text color in unordered lists.

Adjust some margins and whatnot to make things line up better.

Don't uppercase all h2 text.

Put the images for python, lgpl, fedora links in the anchor tags so they
actually work as links.
Ignore cache files in git.