Dynamic status

[milovanderlinden]

open311 currently only supports status open or closed. But we would like intermediate statuses or substatuses (new, in progress and so on) that can be used to communicate to client applications about the workflow, handling and feedback.

[milovanderlinden]

This will be implemented compatible with the hel.fi implementation
https://dev.hel.fi/apis/open311/#Detailed%20status%20of%20service%20requests