Freightliner Cascadia 2018 fix v1.9 1.33.x

v1.9:
– Added WPass
– Fixed interior position
– Also update to DLC addon (1.2: Added support for 2018 Christmas event prizes)
– Removed incorrect engined
– Added correct engine
– Added corresponding gearboxes
– Cleanup of textures
– Cleanup of models
– Corrected the cabins to be recognised as cabines
– Added additional Flow Below mudguards
– Added better icons for parts Separated spoilers from cabs and added them as accessories
– various bug fixes
– Changed DD engine sound to Mercedes