Add a string so SaveMode compares will work.
Merge pull request #412 from ddispaltro/fix_savemode

Add a string so SaveMode compares will work
- Add a string so SaveMode compares will work (thanks @ddispaltro)
- Propagate implicit lang parameter from mailer to mail templates (thanks @jeantil)
Merge remote-tracking branch 'mainline/master' into play-2.3