#544 Merge 3.11/544_scheduled_service_vertices into 3.11/sprint
- Fixed several problems where ScheduledService with custom stops, but not real-time stop change, were not exported properly
- Added an explicit mutex lock to have consistent chainages
- Fixed ScheduledService to reset RT data after setting vertices, otherwise _RTVertices may not have the proper theoretical vertices
- Modified existing test with real-time stop change to also verify this use-case
Edited by Martin Duvanel