Can't figure out how to eliminate ACTOR_NOSE_ANGLE, but this is the next best thing
Some code cleanup
Removed collision of mobs with ground border - this solves the issue of mobs getting stuck, and removes the need to have some sort of teleport-in animation.
Fixed bug in tutorial
Last check-in before using NGUI
Renames
Forgot to include hull weapons when we ported to the .xls scheme
Added start level number
Fixed some maxSpeed and acceleration references;  we shouldn't be peeking into WorldObjectType to get those.
Speed boost for when ship is possessed by player.
more light
Collision damage is now derived from object starting health.
Keep old possessed ship around when swapping to a new one
Added ActorModifier back, more polish to the heroling behavior