Bug 30327: (follow-up) Fix inconsistencies in syspref names and supply defaults

Bug 30327: (follow-up) Fix inconsistencies in syspref names and supply defaults

This patch fetches the new sysprefs into variables, providing default title ascending if
they are not set to avoid an undefined concatenation warning

I also make the update idempotent and fix confusion of plural/singular names

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 8757023b2167bfec92a494873232f1aaa76ab6be)

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>