Automatic merge of T1.5.1-1806-g5522fc5fa and 10 pull requests

- Pull request #570 at 362e4e7: glTF 2.0 support with PBR lighting
- Pull request #1062 at bbc0013: Train Forces popup Window.
- Pull request #1064 at 6a5b9f5: Add Train Info tab to Help window (F1)
- Pull request #1067 at 13ab98b: Traction and dynamic brake retardation
- Pull request #892 at 1f5ba4c: Signal Function OPP_SIG_ID_TRAINPATH
- Pull request #1074 at e9a66c1: Gradient - commit 2024-16-12
- Pull request #1076 at 3bbd537: Allow depart early
- Pull request #1085 at 37e2817: updates key commands for Train Operations window and also Daylight Offset
- Pull request #1082 at 5845a1a: Allow variable water level in glass gauge
- Pull request #1081 at 689494b: Brake cuts power unification

Author: openrails-bot

Source/RunActivity/RunActivity.csproj

@@ -569,7 +569,8 @@
     </Content>
     <Content Include="Content\TrainInfoSprites.png">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </Content>    <Content Include="Content\TrainOperationsCoupler.png">
+    </Content>
+    <Content Include="Content\TrainOperationsCoupler.png">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Content>
     <Content Include="Content\TrainOperations\TrainOperationsMap.png">

Source/RunActivity/Viewer3D/Popups/HelpWindow.cs

@@ -20,10 +20,8 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
-using System.Diagnostics;
 using System.Linq;
 using System.Windows.Forms;
-using LibGit2Sharp;
 using Microsoft.Xna.Framework;
 using Microsoft.Xna.Framework.Graphics;
 using Orts.Simulation;
@@ -32,11 +30,6 @@
 using ORTS.Common;
 using ORTS.Common.Input;
 using ORTS.Settings;
-using static System.Windows.Forms.VisualStyles.VisualStyleElement;
-using Orts.Formats.Msts;
-using SharpFont;
-using static Orts.Viewer3D.WebServices.TrainCarOperationsWebpage.OperationsSend;
-using SharpDX.Direct3D9;
 using Orts.Simulation.RollingStocks.SubSystems.Brakes.MSTS;
 
 namespace Orts.Viewer3D.Popups
@@ -74,8 +67,6 @@ public class HelpWindow : Window
         private Train LastPlayerTrain = null;
         private int LastPlayerTrainCarCount = 0;
         private static Texture2D TrainInfoSpriteSheet = null;
-        //private struct CarInfo { public float MassKg; public bool IsEngine; }
-        //private CarInfo[] CarMass = null;  // TODO: Does not need to persist beyond method. Use List<T>(size) instead.
         private class CarInfo { public readonly float MassKg; public readonly bool IsEngine; public CarInfo(float mass, bool isEng) { MassKg = mass; IsEngine = isEng; } }
 
         List<TabData> Tabs = new List<TabData>();