Ghost Vehicles

[Gudio]

Last update fucked up ghost vehicles. When there is a driver in the car, ghost state doesn't work and all collisions are enabled.

[Stormeus]

Proper ghosting seems to be implemented in the latest development build. Rather than relying on vehicle flags, collisions are instead disabled depending on whether the colliding entities are both entities, and if either of them are ghosted. This should prove to be more reliable for now and in the future as well.

Fix will be pushed in the coming days.