Move away portraits created as children of the -100 object that might be still around after acs-kernel/sql/postgresql/upgrade/upgrade-5.10.0d13-5.10.0d14.sql
use "-level" instead of "-ulevel", since "-level" is used e.g. intemplate::util::multirow_to_list or template::util::list_of_ns_sets_to_multirowas well.
Add the option to unregister (delete permanently the message key from all locales) a message key that has been already marked as deleted. Useful for cleaning up old message keys