Automatic merge of T1.5.1-346-g3831af9fa and 8 pull requests

- Pull request #570 at 14abf7a: Experimental glTF 2.0 support with PBR lighting
- Pull request #722 at fb9079e: Fix Windows Forms deprecations in ActivityEditor
- 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 4cb5c77: 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 #812 at 9dadddb: Bug fix for https://bugs.launchpad.net/or/+bug/2009955 Missing code to rotate DMU display in 2D cabs

Author: openrails-bot

Source/RunActivity/Viewer3D/RollingStock/SubSystems/DistributedPowerInterface.cs

@@ -213,7 +213,6 @@ public TextPrimitive(Point position, Color color, string text, WindowTextFont fo
             public void Draw(SpriteBatch spriteBatch, Point position)
             {
                 Font.Draw(spriteBatch, position, DrawRotation, 0, Text, LabelAlignment.Left, Color, Color.Black);
- //                               Font.Draw(spriteBatch, position, Text, Color);
             }
         }
         public struct TexturePrimitive