This required the EntityKit to be refactored, so that most fields are
pushed into EntityFactory. Due to the nature of how the rule handlers
and the factories interact the code is pretty messy. It works, but it's
tangled and not really clean.
All IG code should use the interface of LocatedEntity when dealing
with any entity, rather than sometimes requiring Entity. Add virtual
functions to the interface where required, and modify all other interfaces
to stop them using Entity. This makes the code way cleaner, and much better
de-coupled.
