Timeout, minimum distance and fine-ceiling added

Found out the current exploits were a bit too strict:
a) If you are hunting the same type, but no spawner is involved, you still get fined
b) If you are away for a long time, you are still fined for killing a "same-type-mob".
c) There is no cap. to the fine you will get (it takes 10 %-points, but allows negative numbers.

The above has been resolved by introducing:
a) a distance which is "resetting" the depreciative-return.
b) a timeout (default 3 minutes)
c) a max of -200% of "fining" of the original reward.