Automatic merge of T1.6-147-g31e3fe251 and 10 pull requests

- Pull request #1082 at e4d7f70: Allow variable water level in glass gauge
- Pull request #570 at 1b6b22e: glTF 2.0 support with PBR lighting
- Pull request #1091 at 492795a: Automatic speed control
- Pull request #1122 at 73c47b4: Wagon Size and Centering Controls
- Pull request #1124 at e241a0d: Built-in PBL2 brake controller
- Pull request #1130 at 0f4342d: Fix F9 points to an incorrect car ID.
- Pull request #1157 at 39cd994: Dynamic brake authorization by TCS
- Pull request #1167 at d5c0d64: Fix: RunActivity slow to terminate because of long sleep in Host Process
- Pull request #1171 at 8fd2066: no internet connection is available, not possible to open the Menu Content Form
- Pull request #1169 at 6cf8c3e: Better Handling of Wagons with Invalid Bogie Configuration

Author: openrails-bot

Source/Orts.Simulation/Simulation/RollingStocks/MSTSSteamLocomotive.cs

@@ -7427,7 +7427,7 @@ private void UpdateWaterInjection(float elapsedClockSeconds)
                 // Temperature Correction Factor = (Tsat - Tfeedwater) / (Tsat - Tref), Assume ref = 20C
 
                 var ReferenceTemperature = 20.0f; // Reference temperature for injector performance
-                ActualInjectorTemperatureCorrectionFactor = ( C.FromF(PressureToTemperaturePSItoF[BoilerPressurePSI]) - TenderWaterTemperatureC) / (C.FromF(PressureToTemperaturePSItoF[BoilerPressurePSI]) - ReferenceTemperature);
+                ActualInjectorTemperatureCorrectionFactor = (float)Math.Sqrt(( C.FromF(PressureToTemperaturePSItoF[BoilerPressurePSI]) - TenderWaterTemperatureC) / (C.FromF(PressureToTemperaturePSItoF[BoilerPressurePSI]) - ReferenceTemperature));
 
                 // Calculate enthalpy of injector feed water based on boiler water temperature
                 // hfg kJ/kg) = 2500 - 2.4 * Tsat (C) - 4% accurate, to be explored later for better accuracy