Vider la session : désactiver les snackbars durant l'opération

Sans quoi plusieurs messages "les résultats ont été invalidés pour…" apparaissent, et c'est nul.

added Doing label

assigned to @mathias.chouet

By Mathias Chouet on 2020-03-11T12:24:06 (imported from GitLab)

added bug label

removed bug label

added enhancement label

changed milestone to %Version 4.10.3

By Mathias Chouet on 2020-03-11T12:24:34 (imported from GitLab)

changed the description

By Mathias Chouet on 2020-03-11T12:25:03 (imported from GitLab)

closed via commit 6e7e22ae

By Mathias Chouet on 2020-03-11T14:00:02 (imported from GitLab)

mentioned in commit 6e7e22ae

By Mathias Chouet on 2020-03-16T09:28:10 (imported from GitLab)