5912004c10
On some slow host, the `newsletter` table get filled with duplicated `notification_history` marked as `sending` that never get sent. To prevent this we've made the two following changes: * We prevent firing `publis_*` hooks on post_type which are excluded from search. * We do not schedule a new post notification email if one has an `notification_history` entry marked as `sending`. [MAILPOET-1371]