Automatic merge of T1.5.1-351-gc9abcd22b and 7 pull requests

- Pull request #570 at 14abf7a: Experimental glTF 2.0 support with PBR lighting
- Pull request #732 at 1edb2e5: Improvements for air brakes
- Pull request #751 at 00981a2: Web interface to control cab controls with external hardware
- Pull request #767 at 82c5f1c: Refine sunrise and sunset
- Pull request #803 at 7157e08: Various adjustments to steam adhesion
- Pull request #809 at f67822a: Some on-screen messages not suppressed, Bug #2008012
- Pull request #813 at a8e9d9b: Refactored garbage generators

Author: openrails-bot

Source/RunActivity/Viewer3D/Common/SunMoonPos.cs

@@ -94,9 +94,9 @@ public static Vector3 SolarAngle(double latitude, double longitude, EnvironmentF
             var solarAzimuthCosine = (Math.Sin(solarDeclination) - (solarZenithCosine * Math.Sin(latitude))) / (Math.Sin(Math.Acos(solarZenithCosine)) * Math.Cos(latitude));
             var solarAzimuthSine = -Math.Sin(solarHourAngle) * Math.Cos(solarDeclination) / Math.Sin(Math.Acos(solarZenithCosine));
 
-            sunDirection.X = (float)solarZenithSine * (float)solarAzimuthSine;
+            sunDirection.X = (float)(solarZenithSine * solarAzimuthSine);
             sunDirection.Y = (float)solarZenithCosine;
-            sunDirection.Z = -(float)solarZenithSine * (float)solarAzimuthCosine;
+            sunDirection.Z = -(float)(solarZenithSine * solarAzimuthCosine);
             sunDirection.Normalize();
 
             return sunDirection;