Automatic merge of T1.5.1-684-gc6e0de1c4 and 9 pull requests

- Pull request #570 at c59c788: Experimental glTF 2.0 support with PBR lighting
- Pull request #839 at d00beb9: First phase of https://blueprints.launchpad.net/or/+spec/additional-cruise-control-parameters
- Pull request #865 at 67014b7: Dispatcher window improvements
- Pull request #874 at f8dbeab: Dynamic brake controller refactoring
- Pull request #875 at 43bf33e: Bug fix for https://bugs.launchpad.net/or/+bug/2036346 Player train switching doesn't work with 3D cabs
- Pull request #876 at f92de76: docs: add source for documents previously on website to source Documentation folder
- Pull request #878 at 43f6ee9: Implement Polach Adhesion
- Pull request #882 at e92be5a: Blueprint/train car operations UI window
- Pull request #883 at aac4d3f: SwitchPanel disconnect/connect handling

Source/Orts.Simulation/Simulation/RollingStocks/MSTSLocomotive.cs

@@ -2426,7 +2426,7 @@ protected virtual void UpdateAxleDriveForce()
                         // Simple slip control
                         // Motive force is reduced to the maximum adhesive force
                         // In wheelslip situations, motive force is set to zero
-                        axle.DriveForceN = Math.Sign(axle.DriveForceN) * Math.Min(axle.AdhesionLimit * axle.AxleWeightN, Math.Abs(axle.DriveForceN));
+                        axle.DriveForceN = Math.Sign(axle.DriveForceN) * Math.Min(axle.MaximumPolachWheelAdhesion * axle.AxleWeightN, Math.Abs(axle.DriveForceN));
                         if (axle.IsWheelSlip) axle.DriveForceN = 0;
                     }
                 }