Links updated

Finally I managed to just sit down, take the necessary time, and go through all of my links to see if they were still active. Turned out quite a few of them weren't... Many sites, and especially rider sites, have ceased to exist in the last year. That's a shame, but I guess life goes on. Leave a comment if there are links not working properly or if you want me to add some links to whatever may interest you. And, by the way, check out Patxi Vila's finally-up-and-running home page. Looks great.