Merge 3.11/654_didok_import into 3.11/sprint
Added one import and one data processor:
- DIDOKVSCImportWorker, which just fills the StopGroup table with the content of a DIDOK file converted to CSV format.
- DIDOKStopsMatcherDataProcessor, which given a list of networks and the DIDOK datasource will look for all StopPoints served in this network and attempt to bind them to a StopGroup based on their StopArea's name if they are not bound yet to a StopGroup.
Also added minimal edition capability from admin to change the StopGroup ID of a given StopPoint.