Julian Prein e6460f9b42 mutt: Omit seconds in attribution time ...

Also rewrite RFC comment a bit to reflect better that the date/time is
not compliant (it hasn't been before either, but now even more).

2025-01-22 15:18:07 +01:00

..

muttrc

mutt: Omit seconds in attribution time

2025-01-22 15:18:07 +01:00