Automatic merge of T1.5.1-1887-g07be04456 and 9 pull requests

- Pull request #1072 at a67d510: Content Creation Shortcuts & Advanced Wagon Shape Interactions
- Pull request #1085 at 37e2817: updates key commands for Train Operations window and also Daylight Offset
- Pull request #1086 at e10390b: Add Settings Exporter tool (copy settings to INI, etc)
- Pull request #1094 at b9b4843: Blended Braking Compatibility and Effectiveness Improvements
- Pull request #1096 at 7a4f055: When the OR main form does not have the focus, hovering above the main OR form makes the mouse cursor disappear. 
- Pull request #1097 at 24ff66b: Fix For Delayed Particle Emitter Spawning
- Pull request #1098 at 6bbd2c6: Correct Use of Wheel Speed vs Ground Speed in Locomotive Physics
- Pull request #1082 at 5845a1a: Allow variable water level in glass gauge
- Pull request #1081 at 689494b: Brake cuts power unification

Author: openrails-bot

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

@@ -6357,9 +6357,6 @@ private void UpdateSteamTractiveForce(float elapsedClockSeconds, float locomotiv
 
                         SteamEngines[numberofengine].RealTractiveForceN += N.FromLbf(tangentialWheelTreadForceLbf);
 
-                        if (SteamEngines[numberofengine].RealTractiveForceN < 0)
-                            Trace.WriteLine("why");
-
 #if DEBUG_STEAM_SLIP
                     if (SpeedMpS > 17.88 && SpeedMpS < 18.5 || SpeedMpS > 34.0 && throttle == 0)
                                         {