wiki spam wins this round

Soon after I enabled the wiki with the spam filter, the spammers found a way around it. Fortunately, I became very familiar with the db structure and was able to kill the spam with a single sql query. The bad news is that I have to shut down anonymous posting again. I'd like to integrate the mailing list info with the trac login system, so maia users could log in, but I don't know how long that will take.

In the meantime, if you want to help with the wiki, just ask for a login.