a new scheduled task that will delete old notifications. the default is
that over 1 year old notifications will be deleted. the scheduled task
is run every 24 hours. this can be disabled by setting the
retention period to false in the notifications config.
Signed-off-by: Hellgren Heikki <heikki.hellgren@op.fi>
Hellgren Heikki
41d4d6e7af
