Automatic merge of T1.5.1-1887-g07be04456 and 9 pull requests

- Pull request #1072 at 52d5886: Content Creation Shortcuts & Advanced Wagon Shape Interactions
- Pull request #1085 at 37e2817: updates key commands for Train Operations window and also Daylight Offset
- Pull request #1086 at e10390b: Add Settings Exporter tool (copy settings to INI, etc)
- Pull request #1094 at b9b4843: Blended Braking Compatibility and Effectiveness Improvements
- Pull request #1096 at 7a4f055: When the OR main form does not have the focus, hovering above the main OR form makes the mouse cursor disappear. 
- Pull request #1097 at 24ff66b: Fix For Delayed Particle Emitter Spawning
- Pull request #1098 at 6bbd2c6: Correct Use of Wheel Speed vs Ground Speed in Locomotive Physics
- 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/Viewer3D/RollingStock/MSTSLocomotiveViewer.cs

@@ -3584,6 +3584,19 @@ public override void HandleUserInput(ElapsedTime elapsedTime)
         /// </summary>
         public override void PrepareFrame(RenderFrame frame, ElapsedTime elapsedTime)
         {
+            // First, update the position of the 3D cab shape
+            if (TrainCarShape != null)
+            {
+                int viewPoint = (Viewer.Camera as InsideThreeDimCamera).ActViewPoint;
+                // Update transform of entire interior
+                TrainCarShape.Location.XNAMatrix = Car.WorldPosition.XNAMatrix;
+                TrainCarShape.Location.TileX = Car.WorldPosition.TileX;
+                TrainCarShape.Location.TileZ = Car.WorldPosition.TileZ;
+
+                TrainCarShape.XNAMatrices[0].Translation = Car.CabViewpoints[viewPoint].ShapeOffset;
+                if (Car.CabViewpoints[viewPoint].ShapeIndex >= 0 && Car.CabViewpoints[viewPoint].ShapeIndex < LocoViewer.TrainCarShape.ResultMatrices.Length)
+                    TrainCarShape.Location.XNAMatrix = LocoViewer.TrainCarShape.ResultMatrices[Car.CabViewpoints[viewPoint].ShapeIndex] * TrainCarShape.Location.XNAMatrix;
+            }
 
             Locomotive.SoundHeardInternallyCorrection[0] = Locomotive.SoundHeardInternallyCorrection[1] = 0;
             foreach (var p in AnimateParts)
@@ -3733,27 +3746,16 @@ public override void PrepareFrame(RenderFrame frame, ElapsedTime elapsedTime)
                 p.Value.PrepareFrame(frame, elapsedTime);
             }
 
-            if (ExternalWipers != null) ExternalWipers.UpdateLoop(Locomotive.Wiper, elapsedTime);
+            ExternalWipers?.UpdateLoop(Locomotive.Wiper, elapsedTime);
             /*
             foreach (var p in DigitParts)
             {
                 p.Value.PrepareFrame(frame, elapsedTime);
             }*/ //removed with 3D digits
 
-            if (TrainCarShape != null)
-            {
-                int viewPoint = (Viewer.Camera as InsideThreeDimCamera).ActViewPoint;
-                // Update transform of entire interior
-                TrainCarShape.Location.XNAMatrix = Car.WorldPosition.XNAMatrix;
-                TrainCarShape.Location.TileX = Car.WorldPosition.TileX;
-                TrainCarShape.Location.TileZ = Car.WorldPosition.TileZ;
-
-                TrainCarShape.XNAMatrices[0].Translation = Car.CabViewpoints[viewPoint].ShapeOffset;
-                if (Car.CabViewpoints[viewPoint].ShapeIndex >= 0 && Car.CabViewpoints[viewPoint].ShapeIndex < LocoViewer.TrainCarShape.ResultMatrices.Length)
-                    TrainCarShape.Location.XNAMatrix = LocoViewer.TrainCarShape.ResultMatrices[Car.CabViewpoints[viewPoint].ShapeIndex] * TrainCarShape.Location.XNAMatrix;
 
-                TrainCarShape.ConditionallyPrepareFrame(frame, elapsedTime, MatrixVisible);
-            }
+            // Finally, handle the 3D cab shape
+            TrainCarShape?.ConditionallyPrepareFrame(frame, elapsedTime, MatrixVisible);
         }
 
         public override void UpdateAnimations(ElapsedTime elapsedTime)