Added XML handlers

As well as extension (world) handlers (an array, which is currently
empty). The class is also now abstract.
Added handleDisconnect and removePenguin

Over-riding Spirit's handleDisconnect method so Penguin objects are
removed. removePenguin is a manual way of doing this (not triggered).
Renamed to RunLogin.php
Added database configuration

The configuration's language is XML.
Added important fields.

Important fields added (e.g id, database, random_key). Added some debug
output. Class is also now using the Kitsune namespace in order to
initialize the Database class.