fleetctl: remove show-schedule command
registry: move TargetState from ScheduledUnit to Unit
fleetctl: sort unit field names
fleetctl: sort keys in list-unit-files
fleetctl: move dstate, state and tmachine into list-unit-files
client: remove Job/Jobs from fleetctl
Merge pull request #766 from jonboulle/ss2

Switch to exposing only Units instead of Jobs