Automatic merge of T1.5-rc3-98-g567f7ca0a and 15 pull requests

- Pull request #630 at 704731a: Sky Color Fix (Addresses Trello Roadmap Card #367 for More accurate sunrise and sunset)
- Pull request #652 at 918fdb1: Add button functions to Raildriver
- Pull request #706 at 570ab21: Extended door functionality
- Pull request #713 at 5a8da77: https://blueprints.launchpad.net/or/+spec/cruise-control 
- Pull request #719 at 56d183c: Upgraded to MonoGame 3.8.0 (+ small update for other libraries)
- Pull request #722 at fb9079e: Fix Windows Forms deprecations in ActivityEditor
- Pull request #732 at 9cffa6d: Improvements for air brakes
- Pull request #733 at 72947b0: Fixed battery switch sound being repeted
- Pull request #734 at 8f8484c: Fixed battery switch timer not working properly
- Pull request #736 at a845085: Replaced truncated brake token table with lists
- Pull request #740 at b3e66ca: Refactored the circuit breaker and the traction cut-off relay in order to use the same design pattern as the C# signal scripts (compatible with current scripts)
- Pull request #741 at 2dd56ad: Fixed brake controller script not being loaded in timetable mode
- Pull request #743 at 60c8b99: Default filename for include statements 
- Pull request #744 at 3c2dc07: Fixed and improved cabview control conditions related to power supply state
- Pull request #745 at cf5acd2: Fix digital displays in rear 3D cab

Source/RunActivity/Viewer3D/RollingStock/MSTSLocomotiveViewer.cs

@@ -3335,7 +3335,7 @@ public ThreeDimentionCabViewer(Viewer viewer, MSTSLocomotive car, MSTSLocomotive
                     if (style != null && style is CabViewDigitalRenderer)//digits?
                     {
                         //DigitParts.Add(key, new DigitalDisplay(viewer, TrainCarShape, iMatrix, parameter, locoViewer.ThreeDimentionCabRenderer.ControlMap[key]));
-                        DigitParts3D.Add(key, new ThreeDimCabDigit(viewer, iMatrix, parameter1, parameter2, this.TrainCarShape, locoViewer.ThreeDimentionCabRenderer.ControlMap[key]));
+                        DigitParts3D.Add(key, new ThreeDimCabDigit(viewer, iMatrix, parameter1, parameter2, this.TrainCarShape, locoViewer.ThreeDimentionCabRenderer.ControlMap[key], Locomotive));
                     }
                     else if (style != null && style is CabViewGaugeRenderer)
                     {
@@ -3558,7 +3558,7 @@ public class ThreeDimCabDigit
         Material AlertMaterial;
         float Size;
         string AceFile;
-        public ThreeDimCabDigit(Viewer viewer, int iMatrix, string size, string aceFile, PoseableShape trainCarShape, CabViewControlRenderer c)
+        public ThreeDimCabDigit(Viewer viewer, int iMatrix, string size, string aceFile, PoseableShape trainCarShape, CabViewControlRenderer c, MSTSLocomotive locomotive)
         {
 
             Size = int.Parse(size) * 0.001f;//input size is in mm
@@ -3586,7 +3586,7 @@ public ThreeDimCabDigit(Viewer viewer, int iMatrix, string size, string aceFile,
 
             //start position is the center of the text
             var start = new Vector3(0, 0, 0);
-            var rotation = 0;
+            var rotation = locomotive.UsingRearCab ? (float)Math.PI : 0;
 
             //find the left-most of text
             Vector3 offset;