Automatic merge of T1.6-59-g2eb7441b0 and 12 pull requests

- Pull request #1156 at f46d5f2: Fix incorrectly disabled options in train operations window
- Pull request #1086 at d8d61eb: Add Settings Exporter tool (copy settings to INI, etc)
- Pull request #1091 at e813c42: Automatic speed control
- Pull request #1104 at 7919243: Handle simple adhesion within the axle module
- Pull request #1115 at 270f22f: Do not activate ETS switch if no suitable cars are attached
- Pull request #1120 at ba3c47f: Automatically Calculate Friction Values if Missing
- Pull request #1121 at 91d2d26: Manually Override Articulation
- Pull request #1124 at e241a0d: Built-in PBL2 brake controller
- Pull request #1157 at 39cd994: Dynamic brake authorization by TCS
- Pull request #1159 at 48c9a63: Skip OR warnings about TSRE-specific token Ruler
- Pull request #1082 at 5845a1a: Allow variable water level in glass gauge
- Pull request #1128 at 1d7643d: Particle Emitter Overhaul

Author: openrails-bot

Source/Orts.Formats.Msts/WorldFile.cs

@@ -82,6 +82,7 @@ public class Tr_Worldfile : List<WorldObject>
         {
             TokenID.VDbIdCount,
             TokenID.ViewDbSphere,
+            TokenID.Ruler,
         };
 
         public Tr_Worldfile(SBR block, string filename, List<TokenID> allowedTokens)

Source/Orts.Parsers.Msts/TokenID.cs

@@ -1718,6 +1718,9 @@ public enum TokenID : uint
         MaxStackedContainers,
         Length,
         Flipped,
+
+        // TSRE specific
+        Ruler
     }
 
 }