Mods from the «Addons» category 39

- Added trailers and cargo.
Peterbilt 379 SV version 2.0 for SpinTires (author: Sergo). Changed cargo to 4 points: fuel, repair points.

Platforms and trailers are taken from MAZ-5316. There are own wheels (4 sets). Added cargo to the platform (body) and trailer (body).

- Added platform and trailer Zil with new cargoes.
Platforms and trailers with new loads and replace the default platforms and trailers. Used materials:

1) Gas 33077 4x2 version 1 for SpinTires (v03.03.16).
2) Gaz 33077 4x2 version 1 for SpinTires (v03.03.16). Author: Sergo.
3) Zil-130M version 30.05.16 for SpinTires (v03.03.16). Author: Sergey Evgenievich (Dr.Diesel).
4) Zil trailers version 1 for SpinTires (v03.03.16). Author: Vyacheslav Andreev.

Loads from default vehicles and add-ons 4 and 8 points + repair + fuel, as well as changed the settings of default cars, added wheels.