nanny: refresh worker on DEVICE_READY
Merge pull request #341 from pwieczorkiewicz/nanny-fix
events: do not delete dbus object immediately

When a device deletion was successfull, we still have to send out
a dbus event about, so do not delete the object immediatelly, but
wait until the next netlink event arrives where we send them.
Merge pull request #342 from mtomaschewski/delete-device

events: do not delete dbus object immediately