Automatic merge of T1.5.1-651-g45d8b7ff4 and 6 pull requests

- Pull request #839 at d00beb9: First phase of https://blueprints.launchpad.net/or/+spec/additional-cruise-control-parameters
- Pull request #857 at 9afc8c3: Adding Air Flow Meters
- Pull request #865 at 776d6df: Dispatcher window improvements
- Pull request #874 at 86d58ff: Dynamic brake controller refactoring
- Pull request #875 at 43bf33e: Bug fix for https://bugs.launchpad.net/or/+bug/2036346 Player train switching doesn't work with 3D cabs
- Pull request #876 at f92de76: docs: add source for documents previously on website to source Documentation folder

Author: openrails-bot