New (hidden) settings translations in totem

[Bastien Nocera <hadess hadess net>]

Hey,

I should have landed this earlier, but I got caught up.

This would add 2 new strings that don't need to be translated because
we don't have a UI for it:
https://gitlab.gnome.org/GNOME/totem/-/merge_requests/247/diffs?commit_id=0ed623b4f1d3c5abfb29d353ac26a8679dd5a6d3

We still don't have a way to mark translations as important/not
important, but this one definitely falls into the latter category.

Cheers