[ldapfeed] if a deactivated user becomes available again in its source, reactivate it (closes #2542776) * cwusers that see their ldap source counterpart disappear are deactivated * until now they were not activated again on reappearance * note this behaviour in the doc

#!/usr/bin/env python
from cubicweb.cwctl import run
import sys
run(sys.argv[1:])