Use unrealircd-rpc-php JSON-RPC interface

Use unrealircd-rpc-php JSON-RPC interface
https://github.com/unrealircd/unrealircd-rpc-php

Note:
* Some things may be broken (rushed commit)
* Various error checking was removed and needs to be readded
* We are currently using the RPC query() interface for everything,
  while instead we should be using the dedicated things like
  Spamfilter->add or whatever it is called.... actually those don't
  always exist yet in unrealircd-rpc-php, and when they do they
  expect an URL which is not what i like at all, so... this needs
  some more thought ;). But for now it works with raw query().
* DOCS!!