More work on the new netfilter.org website and people.netfilter.org

I've finished the scripts for auto-generation of the mirrors.html page from the DNS zone file, and the HOWTO-link-generation similar to what the current netfilter homepage has. Also done some final tweaking of the style sheets.

With regard to the people.netfilter.org blosxom configuration: I've now finished some nice blosxom templates (flavour, how it likes to call these itself) that resemble the exact layout of the docbook-website generated netfilter homepage... in fact, it is using the same CSS :)