Outdated Gavril Roamer Sport 0.10.0.0.1

This is a non-mandatory update for the Gavril Roamer Sport mod. It appends the changes seen with the 0.9.0.5 update to BeamNG.drive, plus some fixes for little issues I found while doing that.

• Updated Jbeams to 0.9.0.5, bringing along some minor changes.
  • Added "$fuel" variable to the fuel tank, which I hope is pretty self-explanatory.
• Updated previews for some models.
• Tweaked floor and exhaust nodes.
• Adjusted the ride height for the off-road configuration.
• Fixed some coltris and anti-stretch beams on the body.
• Fixed the 3-link rear suspension using the wrong/missing driveshaft when it is manually selected from the parts selection menu.