* Moved Werdna's new IP functions to the IP class

* Moved Werdna's new IP functions to the IP class
* Handle bad input to new IP::isAddressInRange gracefully (return false)
* Block::doAutoblock always returns a bool now, as the docs say
* Split off Block::isWhitelistedIp from Block::doAutoblock
* Put AOL proxy IPs in whitelist, and also one from Singapore that was troublesome on enwiki (more should be added, probably?)
* Improve some docs
* Fix a bug: check if the passed IP is in the whitelist, not if the request IP is in the whitelist