Re #1135 start an HTTP server for each charge point and put its address in WSA address header
Adapt to OCPP API changes
Re #1135 Parse incoming OCPP requests from central service and print requested action
Use spray 1.1-M8 instead of 1.1-M7
Re #1135 Do not accept OCPP requests from central system for other charge points
Re #1135 various minor improvements after review