Automatic merge of T1.5.1-1284-gca636331f4 and 13 pull requests

- Pull request #839 at d00beb9: First phase of https://blueprints.launchpad.net/or/+spec/additional-cruise-control-parameters
- Pull request #891 at 9a1d6b2: Auto save
- Pull request #892 at 1f5ba4c: Signal Function OPP_SIG_ID_TRAINPATH
- Pull request #952 at 8347095: Investigation - Pulsing graphics
- Pull request #953 at a519452: Fix Lights Crash on Corrupt Shapes
- Pull request #954 at 62061b8: Multiple Track Profiles & Superelevation Improvements
- Pull request #972 at e90a2aa: On Map window color changed switch or signal is not changed
- Pull request #980 at f1bfd89: Downloading route content (Github, zip) second part 
- Pull request #981 at 10d297f: Multiple type trainset lightglows
- Pull request #982 at efcf19c: WEB based Switch Panel enhancement: Alerter
- Pull request #984 at 0f8122e: Player train switching for timetable mode
- Pull request #900 at c27f32d: DMI updates
- Pull request #876 at f92de76: docs: add source for documents previously on website to source Documentation folder

Author: openrails-bot