Automatic merge of T1.6-rc3-30-gdf7bf1a26 and 17 pull requests

- Pull request #1104 at 1f7af77: Handle simple adhesion within the axle module
- Pull request #1057 at 1c2bcb4: Switchable brake system
- Pull request #1086 at e10390b: Add Settings Exporter tool (copy settings to INI, etc)
- Pull request #1091 at 7fc8de1: Automatic speed control
- Pull request #1110 at 387388e: Fix Activity Runner persists after loading exception
- Pull request #1115 at 270f22f: Do not activate ETS switch if no suitable cars are attached
- Pull request #1121 at 91d2d26: Manually Override Articulation
- Pull request #1123 at dc286f5: Handle null control active locomotive
- Pull request #1125 at 7a4f055: Lift #1096 into 1.6 release
- Pull request #1129 at 034b6e2: adds missing es.po files
- Pull request #1130 at 251a677: Fix F9 points to an incorrect car ID.
- Pull request #1131 at d8f0d8c: fix: Skip byte position from compressed files as it is not supported
- Pull request #1132 at 1dd9be8: Fixes For Correct Questionable Braking Parameters
- Pull request #1133 at 8dc00d5: Minor Fix for Brake Pipe Charging
- Pull request #1082 at 5845a1a: Allow variable water level in glass gauge
- Pull request #1081 at 689494b: Brake cuts power unification
- Pull request #1124 at fab5457: Built-in PBL2 brake controller

Author: openrails-bot

Source/Orts.Simulation/Simulation/RollingStocks/SubSystems/Brakes/MSTS/AirSinglePipe.cs

@@ -2247,7 +2247,7 @@ protected static void PropagateBrakeLinePressures(float elapsedClockSeconds, Tra
                                     float supplyPressure = locoAirSystem.SupplyReservoirPresent ? locoAirSystem.SupplyResPressurePSI : loco.MainResPressurePSI; // Pressure of reservoir used for brake pipe charging
 
                                     if (supplyPressure - locoAirSystem.BrakeLine1PressurePSI < 15.0f) // Reduce recharge rate if near MR pressure as per reality
-                                        PressureDiffEqualToPipePSI *= MathHelper.Lerp(0, 1.0f, (supplyPressure - train.EqualReservoirPressurePSIorInHg) / 15.0f);
+                                        PressureDiffEqualToPipePSI *= MathHelper.Lerp(0, 1.0f, (supplyPressure - locoAirSystem.BrakeLine1PressurePSI) / 15.0f);
                                     if (train.EqualReservoirPressurePSIorInHg - locoAirSystem.BrakeLine1PressurePSI < chargeSlowdown) // Reduce recharge rate if near EQ to simulate feed valve behavior
                                         PressureDiffEqualToPipePSI *= (float)Math.Pow((train.EqualReservoirPressurePSIorInHg - locoAirSystem.BrakeLine1PressurePSI) / chargeSlowdown,
                                             1.0f/3.0f);