Auto-RBL submission for SK

Having played with Spam Karma a bit, I’ve now added (experimental) support for auto-submitting IPs and URLs to the RBL. They’re auto-submitted if a spam scores the maximum amount and is auto-deleted.

I’ve also changed the regular expression used for pulling out URLs from the comment so that it strips trailing slashes off the URL, although it still needs some work as it will sometimes pull bits of HTML out of the comment too.

If you want to try it (which would be much appreciated both for testing my code and for testing the RBL submission and updating) please hit the RBL homepage for instructions.