Whole host of issues resolved:

 * Hosting site on port 4000, with Vagrant going 4000 -> 4000 so that a) the site works from host system and b) links work for the `wget-test` utility
 * Moved all options for Tidy to a seperate config file and added all the tags that it didn't recognize yet
 * Added compile step for SASS -> CSS into Rakefile
 * `wget-test` now selects to right base url from _config.yml, cleans up tmp files
 * Added provision step to have apache listen to port 4000
 * Fixed robots.txt (now adheres to base url, so that wget-test works properly)
 * Fixed homepage to proper base url's
 * Fixed head(*) templates to properly truncate descriptions (was leaving half-HTML-entities), point to the right atom feed, removed duplicate rel="" tags, gave it a proper <head> element. head-dark still has problems (so get rid of that one)

TODO:
 * Have apache2 configured automatically
 * Collapse head* templates into one (I just dont understand why there are multiple)