add db schema (postgres, because it is the right one)
make label a new style object (to work with psycopg2 adaption)
initial database module
add db -> python adaptation
add database to setup (now mandatory)
fix label adaption in database module
include bandwidth in service parameters representation
start transition towards database usage
update schema with different state machines
more schema updates, now with backend schema and more
start overhaul on simplebackend for db backend
add relations and adaption for datetime
add nsi2 local service in registry
fix simple backend reference from dud backend
a bit of cleanup in simple backend
overhaul scheduler for multiple connections
updates to simple backend, including work-around for spurious race condition
change schema file to use timestamps without timezones - must always be utc
make simplebackend use utc, create schedule rebuild from database and make backend into a service
add functionality for label value enumeration