Automatic merge of T1.4-458-g992c4f7f0 and 12 pull requests

- Pull request #525 at 614b222: TCS extensions
- Pull request #613 at 39fb000: fix: Use properly FPS-independent smoothing function
- Pull request #616 at 1b168a0: Improvements in graduated/full release braking
- Pull request #617 at 99c6474: 02m: Removed menu option Debrief Evaluation. Now always available.
- Pull request #619 at ea10bfc: Adjust HuD to display relevant parameters for DM locomotive
- Pull request #620 at 67c67f1: Adjust kinietic friction calculations
- Pull request #624 at 01231e1: Menu option04 - invert controls
- Pull request #627 at 452a72f: Improve advanced adhesion model
- Pull request #629 at 34abd9c: Refined label for downloading Testing Version
- Pull request #630 at 688d0cd: Sky Color Fix (Addresses Trello Roadmap Card #367 for More accurate sunrise and sunset)
- Pull request #635 at b731488: Minor steam locomotive issues.
- Pull request #639 at 26c4dbf: fix: Use correct randomness source for viewer weather

Source/Orts.Simulation/MultiPlayer/ClientComm.cs

@@ -88,7 +88,6 @@ public void Receive(object client)
 			while (true)
 			{
 				bytesRead = 0;
-				//System.Threading.Thread.Sleep(Program.Random.Next(50, 200));
 				try
 				{
 					//blocks until a client sends a message

Source/Orts.Simulation/MultiPlayer/OnlinePlayer.cs

@@ -106,7 +106,6 @@ public void Receive(object client)
 
 			while (true)
 			{
-				//System.Threading.Thread.Sleep(Program.Random.Next(50, 200));
 
 				bytesRead = 0;
 

Source/RunActivity/Viewer3D/Weather.cs

@@ -107,7 +107,7 @@ public WeatherControl(Viewer viewer)
                     UpdateSoundSources();
                     UpdateVolume();
                     // We have a pause in weather change, depending from randomization level
-                    dynamicWeather.stableWeatherTimer = ( 4.0f - Viewer.Settings.ActWeatherRandomizationLevel) * 600 + Simulator.Random.Next(300) - 150;
+                    dynamicWeather.stableWeatherTimer = ( 4.0f - Viewer.Settings.ActWeatherRandomizationLevel) * 600 + Viewer.Random.Next(300) - 150;
                     weatherChangeOn = true;
                 }
 
@@ -262,14 +262,14 @@ private bool RandomizeInitialWeather()
             CheckDesertZone();
             if (DesertZone) return false;
             // First define overcast
-            var randValue = Simulator.Random.Next(170);
+            var randValue = Viewer.Random.Next(170);
             var intermValue = randValue >= 50 ? (float)(randValue - 50f) : (float)randValue;
             Weather.OvercastFactor = intermValue >= 20 ? (float)(intermValue - 20f)/100f: (float)intermValue/100f; // give more probability to less overcast
             Viewer.Simulator.WeatherType = Orts.Formats.Msts.WeatherType.Clear;
             // Then check if we are in precipitation zone
             if (Weather.OvercastFactor > 0.5)
             {
-                randValue = Simulator.Random.Next(75);
+                randValue = Viewer.Random.Next(75);
                 if (randValue > 40)
                 {
                     Weather.PricipitationIntensityPPSPM2 = (float)(randValue - 40f) / 1000f;
@@ -288,7 +288,7 @@ private bool RandomizeInitialWeather()
             }
             else Weather.PricipitationIntensityPPSPM2 = 0;
             // and now define visibility
-            randValue = Simulator.Random.Next(2000);
+            randValue = Viewer.Random.Next(2000);
             if (Weather.PricipitationIntensityPPSPM2 > 0 || Weather.OvercastFactor > 0.7f )
             // use first digit to define power of ten and the other three to define the multiplying number
                 Weather.FogDistance =  Math.Max ( 100, (float)Math.Pow(10 , ((int)(randValue / 1000) + 2)) * (float)((randValue % 1000 + 1) / 100f));
@@ -772,9 +772,9 @@ public void WeatherChange_Update(ElapsedTime elapsedTime, WeatherControl weather
             {
                 // define how much time transition will last
                 var weatherChangeTimer = (4 - weatherControl.Viewer.Settings.ActWeatherRandomizationLevel) * 600 +
-                    Simulator.Random.Next((4 - weatherControl.Viewer.Settings.ActWeatherRandomizationLevel) * 600);
+                    Viewer.Random.Next((4 - weatherControl.Viewer.Settings.ActWeatherRandomizationLevel) * 600);
                 // begin with overcast
-                var randValue = Simulator.Random.Next(170);
+                var randValue = Viewer.Random.Next(170);
                 var intermValue = randValue >= 50 ? (float)(randValue - 50f) : (float)randValue;
                 ORTSOvercast = intermValue >= 20 ? (float)(intermValue - 20f) / 100f : (float)intermValue / 100f; // give more probability to less overcast
                 ORTSOvercastTransitionTimeS = weatherChangeTimer;
@@ -783,7 +783,7 @@ public void WeatherChange_Update(ElapsedTime elapsedTime, WeatherControl weather
                 // Then check if we are in precipitation zone
                 if (ORTSOvercast > 0.5)
                 {
-                    randValue = Simulator.Random.Next(75);
+                    randValue = Viewer.Random.Next(75);
                     if (randValue > 40)
                     {
                         ORTSPrecipitationIntensity = (float)(randValue - 40f) / 1000f;
@@ -821,7 +821,7 @@ public void WeatherChange_Update(ElapsedTime elapsedTime, WeatherControl weather
                 }
 
                 // and now define visibility
-                randValue = Simulator.Random.Next(2000);
+                randValue = Viewer.Random.Next(2000);
                 if (ORTSPrecipitationIntensity > 0 || ORTSOvercast > 0.7f)
                     // use first digit to define power of ten and the other three to define the multiplying number
                     ORTSFog = Math.Max(100, (float)Math.Pow(10, ((int)(randValue / 1000) + 2)) * (float)((randValue % 1000 + 1) / 100f));