Make Reply by email easier to configure
Builds on !1566 (merged).
Omnibus companion MR: omnibus-gitlab!510 (merged) (cc @marin)
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Builds on !1566 (merged).
Omnibus companion MR: omnibus-gitlab!510 (merged) (cc @marin)