#725 supybot.com down

[Morten Lied Johansen]

There are a lot of links to supybot.com in the docs and on the sf pages, but that site seems to be down. The site should either be brought back online, or the links removed from the docs.

At the same time, there was a lot of documentation on that site that doesn't seem to be available anywhere else. It should probably be resurrected if possible.