* fixed bug where autopilot avoid code was interfering with combat code at close range
	-> NPCs are deadlier in fights
	-> The 'sit on top of them' fighting trick is now dead.
* altered NPC aiming equation to take into account the center of the host ship, not just the center of the target
* fixed (harmless, they really were) annoying null pointer exceptions in the F1 menu if the player ship isn't initialized yet.
* comm window now no longer displays by default, will be shown if a message is received
* increased start cash to 50k
* start ship now has ERPCs instead of PNBCs (which, even though they suck, makes sense since all skybus cabs do. More cash makes up for it).