Automatic merge of T1.5.1-376-g885592329 and 12 pull requests

- Pull request #570 at de7a14f: Experimental glTF 2.0 support with PBR lighting
- Pull request #732 at 53f4a0e: Improvements for air brakes
- Pull request #751 at 00981a2: Web interface to control cab controls with external hardware
- Pull request #799 at dc03850: Consolidated wind simulation
- Pull request #802 at 4d198e4: Added support for activity location events to the TrackViewer
- Pull request #803 at 7157e08: Various adjustments to steam adhesion
- Pull request #813 at ff454eb: Refactored garbage generators
- Pull request #815 at a5cc165: chore: Add GitHub automatic release notes configuration
- Pull request #818 at 73b637f: Allow independent drive axles for locomotives
- Pull request #820 at 6e7a5b6: delay option for masterkey does not delay switch off
- Pull request #821 at e0fa5a8: Adds suppression of safety valves
- Pull request #822 at 82ef736: battery switch two buttons option in combination with a delay

Source/Documentation/Manual/cabs.rst

@@ -343,7 +343,7 @@ Dedicated buttons for brake controllers
 .. index::
     single: ORTS_BAILOFF
 
-In addition to the BailOff keyboard command, a cabview control named
+In addition to the BailOff keyboard command ``</>``, a cabview control named
 ORTS_BAILOFF is available. It is used to release the brakes of the engine
 while keeping the train brakes applied.
 
@@ -352,13 +352,14 @@ while keeping the train brakes applied.
 
 In some brake controllers, there is a button that provides a full and quick
 release of the train brake when pressed. OR supports this via the
-ORTS_QUICKRELEASE cabview control.
+ORTS_QUICKRELEASE cabview control, or alternatively, pressing ``<Ctrl+/>``.
 
 .. index::
     single: ORTS_OVERCHARGE
 
 Some brake controllers have a dedicated button to overcharge the brake pipe.
-The ORTS_OVERCHARGE cabview control can be used for this purpose.
+The ORTS_OVERCHARGE cabview control can be used for this purpose. Alternatively
+the keyboard command ``<Ctrl+Shift+/>`` is available.
 
 Here is an example of one of this controls within the .cvf file::