Fixed first person view not working properly

Altered flight path calculation to allow mods to change gravity at runtime

Fixed bug where scooter was invisible and the rider was glitched out

Optimised scooter spring animation to be consistent across frame-rates

Polished hip spring animation to be consistent across frame-rates

Polished head spring animation to be consistent across frame-rates (fixes head randomly looking in different directions)

Fixed player twisting weirdly when boardsliding

Fixed replay editor camera not having same render distance as game camera