updating generic bus models, renaming folders for generic medium lorry vehicles

...tedBus 31b/primary_heavyBus group_P31_32_Smart_ES.PIF.xml

...1b/primary_heavyBus group_P31_32_Smart_ES.PIF_incl TC.xml

...CompletedBus 31b/vecto_vehicle-completed_heavyBus_31b.xml

...aration Mode/Group 51/vecto_vehicle-medium_lorry_4x2F.xml

Generic Vehicles/Declaration Mode/Group 53/130kW Engine.veng

...Vehicles/Declaration Mode/Group 53/130kW_D_Engine_ML.vmap

...Mode/Group 53/6 Gear manual transmission 0.791-5.375.vgbx

...ric Vehicles/Declaration Mode/Group 53/Axle_4x2_orig.vtlm

Generic Vehicles/Declaration Mode/Group 53/Gear_1.vtlm

Generic Vehicles/Declaration Mode/Group 53/Gear_2.vtlm

Generic Vehicles/Declaration Mode/Group 53/Gear_3.vtlm

Generic Vehicles/Declaration Mode/Group 53/Gear_4.vtlm

Generic Vehicles/Declaration Mode/Group 53/Gear_5.vtlm

Generic Vehicles/Declaration Mode/Group 53/Gear_6.vtlm

Generic Vehicles/Declaration Mode/Group 53/ML3r vehicle.vveh

Generic Vehicles/Declaration Mode/Group 53/ML3r.vecto

...hicles/Declaration Mode/Group 53/Volllastkurve 130kW.vfld

...tion Mode/Group 54 XML/vecto_vehicle-medium_lorry_4x2.xml

Generic Vehicles/Declaration Mode/Group 54/130kW Engine.veng

...Vehicles/Declaration Mode/Group 54/130kW_D_Engine_ML.vmap