deskutils/remind: update to 03.03.08

While we are here:

• fix LANG_PBR handling
• add a dummy LANG_US option to avoid confusion
• add a pkg-help file explaining that only one language can be installed at a time

Changelog: https://git.skoll.ca/Skollsoft-Public/Remind/src/branch/master/docs/WHATSNEW

PR: 258499
Reported By: portscout