Automatic merge of T1.5.1-1606-gf9e80b97d and 11 pull requests

- Pull request #900 at b54024b: DMI in 3D cab + two more dials
- Pull request #892 at 1f5ba4c: Signal Function OPP_SIG_ID_TRAINPATH
- Pull request #961 at ffccb2e: Improvements for Power Supplies
- Pull request #1015 at 1ade99e: Enhancements for EP brakes
- Pull request #1026 at 6a89a97: Fix for Multiplayer: remote trains chuff can't be heard https://bugs.launchpad.net/or/+bug/2092771
- Pull request #1029 at 31fd7d2: Superelevation Follow Up Fixes
- Pull request #1031 at 34aa23a: Multiplayer Server, forked from Open Rails Ultimate; blueprint https://blueprints.launchpad.net/or/+spec/multiplayer-server
- Pull request #1047 at eb8027b: Docs: adds translation docs
- Pull request #1058 at 626ebed: Refactor notification parameters
- Pull request #1055 at d1a56b3: Route Based TTrack Sounds
- Pull request #896 at f1681df: First implementation of https://blueprints.launchpad.net/or/+spec/specific-sounds-for-ai-trains

Author: openrails-bot

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

@@ -134,8 +134,15 @@ public override void Update(float elapsedClockSeconds)
                 }
                 if (EPBrakeActiveInhibitsTripleValve)
                 {
-                    HoldingValve = ValveState.Release;
-                    IsolationValve = ValveState.Lap;
+                    if (TripleValveState != ValveState.Emergency)
+                    {
+                        HoldingValve = ValveState.Release;
+                        IsolationValve = ValveState.Lap;
+                    }
+                    else
+                    {
+                        IsolationValve = ValveState.Release;
+                    }
                 }
 
                 base.Update(elapsedClockSeconds); // Allow processing of other valid tokens