Move police to lua (scripted police)

1. Disables the old police stuff.
2. Adds new lua command : GetFine() (so they can know if you're a criminal)
3. Police backs off if you pay the fine.
4. Police is spawned and docked by deafult always at your nearest starport.
5. Give you a chance to pay before you get slaughtered. 10 seconds..
6. You are asked to pay if you close in on a starport, before they attack.