Undefined variable when grid editing a foreign key column

Signed-off-by: Marc Delisle <marc@infomarc.info>
Translated using Weblate (French)

Currently translated at 100.0% (2770 of 2770)
Translated using Weblate (Spanish)

Currently translated at 100.0% (2770 of 2770)
Merge remote-tracking branch 'origin/QA_4_2' into QA_4_2
Fix punctuation

Signed-off-by: Marc Delisle <marc@infomarc.info>
Update po files