Automatic merge of T1.5.1-1692-g8b2dd97c0 and 16 pull requests

- Pull request #900 at 4629736: DMI in 3D cab + two more dials
- Pull request #1030 at d3ae4a2: Refactor settings, in prep for settings exporter
- Pull request #1045 at cc4d53c: Bugfix: Empty Start Time for Explore, and other issues loading from Menu Selection and Content Routes
- Pull request #1052 at 5bbc476: Content Manager: Add axle count, and lowest derail force
- Pull request #1062 at 3b18c48: Train Forces popup Window.
- Pull request #1064 at 9b3415e: Add Train Info tab to Help window (F1)
- Pull request #1066 at 62c89c1: Log derailment, using TraceInformation.
- Pull request #892 at 1f5ba4c: Signal Function OPP_SIG_ID_TRAINPATH
- Pull request #1000 at d8d9709: Locomotive operation from control car
- Pull request #1029 at 92c74ef: Superelevation Follow Up Fixes
- Pull request #1057 at 50c3789: Switchable brake system
- Pull request #1065 at 409064d: Fix for PantographToggle sound event
- Pull request #1069 at 3f153f0: Mouse wheel control only with Alt – Followup for #1051
- Pull request #1055 at 90bbcff: Route Based TTrack Sounds
- Pull request #896 at f1681df: First implementation of https://blueprints.launchpad.net/or/+spec/specific-sounds-for-ai-trains
- Pull request #1049 at 4dd8c4f: Re-organise document storage and access

Author: openrails-bot

Source/RunActivity/Viewer3D/Cameras.cs

@@ -270,7 +270,7 @@ protected void ZoomByMouseWheel(float speed)
         {
             // Will not zoom-in-out when help windows is up.
             // TODO: Property input processing through WindowManager.
-            if (UserInput.IsMouseWheelChanged && !UserInput.IsDown(UserCommand.GameSwitchWithMouse) && !Viewer.HelpWindow.Visible)
+            if (UserInput.IsMouseWheelChanged && (!UserInput.IsDown(UserCommand.GameSwitchWithMouse) || !(this is ThreeDimCabCamera)) && !Viewer.HelpWindow.Visible)
             {
                 var fieldOfView = MathHelper.Clamp(FieldOfView - speed * UserInput.MouseWheelChange / 10, 1, 135);
                 new FieldOfViewCommand(Viewer.Log, fieldOfView);

Source/RunActivity/Viewer3D/RollingStock/MSTSLocomotiveViewer.cs

@@ -2340,7 +2340,7 @@ public virtual int GetDrawIndex()
         /// </summary>
         float NormalizedMouseMovement()
         {
-            var mouseWheelChange = UserInput.IsDown(UserCommand.GameSwitchWithMouse) ? UserInput.MouseWheelChange : 0;
+            var mouseWheelChange = (UserInput.IsDown(UserCommand.GameSwitchWithMouse) ? UserInput.MouseWheelChange : 0) / 5;
             return (ControlDiscrete.Orientation > 0
                 ? (float)(UserInput.MouseMoveY + mouseWheelChange) / (float)Control.Height
                 : (float)(UserInput.MouseMoveX + mouseWheelChange) / (float)Control.Width)