Added IP filtering
I’ve added IP filtering in an attempt to control the abuse by spammers of the demo. I’ll have to add more automation, but it’s already had an effect. The demo wiki is not as out of control as it once was. I’ve expanded these same filtered addresses to all hosted wikis, so in the event that a user keeps their wiki public, it will at least be protected from spammers I’ve identified. The IP display feature is only enabled on the demo site.