Switched to a new host

After having a flaky VPS host for a year or so decided to switch to a new slightly less flaky host. I tried to remove some of the weird custom cruft this site has built up to make this easier in the future, but it’s still suffered some inevitable bit rot and some of the formatting got perturbed. I didn’t bother reposting the Java applets this time, though I might actually post the source at some point.