Job Status updates, and GearDashboard with crawler gears.

Version 1.1.7 comes with stability updates to the TruckSimulatorPlugin.Job.InProgress property, and adds a new TruckSimulatorPlugin.Job.Status property so that you can track the status of a job as you're doing it.

There's also a new property TruckSimulatorPlugin.Drivetrain.GearDashboard, that should represent crawler gears properly, as well as reverse gears, by showing C1, C2 for crawlers, and R1, R2 etc for reverse gears.