* destroy_if_obsolete is now synchronous

* cleanwebsitejob to handle one website per one

* wip delete_obsolete_connections_for_self_and_direct_sources

Co-authored-by: Pierre-André Boissinot <pierreandre.boissinot@noesya.coop>
Co-authored-by: Arnaud Levy <arnaud.levy@noesya.coop>

* wip

* new failed test

* fix

* fix

* clean + delay

* better

* comment

* comment

* comment

* syntax

---------

Co-authored-by: Pierre-André Boissinot <pierreandre.boissinot@noesya.coop>
Co-authored-by: Arnaud Levy <arnaud.levy@noesya.coop>
Co-authored-by: Arnaud Levy <contact@arnaudlevy.com>

Co-authored-by: Pierre-André Boissinot <pierreandre.boissinot@noesya.coop>
Co-authored-by: Sébastien Gaya <sebastien.gaya@gmail.com>