Automatic merge of T1.5.1-922-g0a17d985e and 15 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 68029a6: 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 e0f3c55: 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

Author: openrails-bot

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

@@ -2049,7 +2049,6 @@ public override void Update(float elapsedClockSeconds)
 
             TrainControlSystem.Update(elapsedClockSeconds);
 
-            LocomotivePowerSupply?.Update(elapsedClockSeconds);
             UpdateControllers(elapsedClockSeconds);
 
             // Train Heading - only check the lead locomotive otherwise flipped locomotives further in consist will overwrite the train direction
@@ -2206,6 +2205,9 @@ public override void Update(float elapsedClockSeconds)
 
                     //Force to display
                     FilteredMotiveForceN = CurrentFilter.Filter(MotiveForceN, elapsedClockSeconds);
+
+                    // Only update power supply for player driven locomotives
+                    LocomotivePowerSupply?.Update(elapsedClockSeconds);
                     break;
                 default:
                     break;