Automatic merge of T1.5.1-922-g0a17d985e and 16 pull requests

- Pull request #570 at 3539862: 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 #876 at f92de76: docs: add source for documents previously on website to source Documentation folder
- Pull request #882 at 3ca0eb1: Blueprint/train car operations UI window
- Pull request #885 at 42092cb: feat: Add notifications to Menu
- Pull request #886 at 6c0785b: Scene viewer extension to TrackViewer
- Pull request #892 at 1f5ba4c: Signal Function OPP_SIG_ID_TRAINPATH
- Pull request #896 at 5866028: First implementation of https://blueprints.launchpad.net/or/+spec/specific-sounds-for-ai-trains
- Pull request #903 at 29f3d1a: Downloading route content (Github, zip)
- Pull request #912 at f7b85e4: New Triple Valve Features Vol. 2
- Pull request #919 at 26cc6a8: Added mouse wheel support for controls which can be moved by pressing t…
- Pull request #923 at cc1b5b6: Add curve squeal to route
- Pull request #924 at 6c2c3cd: Default Asset Improvements
- Pull request #925 at e3b1688: Fix brakeshoe force bug
- Pull request #927 at cf687d4: AI Train Power Supply/Lights Fix
- Pull request #928 at 9f2f220: Fix Missing Initializations From Copy in MSTSLocomotive

Author: openrails-bot

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

@@ -1292,7 +1292,7 @@ public override void Copy(MSTSWagon copy)
             DynamicBrakeBlendingEnabled = locoCopy.DynamicBrakeBlendingEnabled;
             DynamicBrakeAvailable = locoCopy.DynamicBrakeAvailable;
             airPipeSystem = locoCopy.airPipeSystem;
-            DoesVacuumBrakeCutPower = locoCopy.DoesBrakeCutPower;
+            DoesVacuumBrakeCutPower = locoCopy.DoesVacuumBrakeCutPower;
             DoesBrakeCutPower = locoCopy.DoesBrakeCutPower;
             BrakeCutsPowerAtBrakeCylinderPressurePSI = locoCopy.BrakeCutsPowerAtBrakeCylinderPressurePSI;
             BrakeCutsPowerAtBrakePipePressurePSI = locoCopy.BrakeCutsPowerAtBrakePipePressurePSI;