[UMFRAGE] Minimum length in postings

[Mammi71 (One feature, Six mappers and still More ways to map it)]

@Danfost:
Wenn Du das gleiche Problem hast, schreib bitte auch hier:
https://community.openstreetmap.org/t/could-we-have-a-emoji-thumps-up-as-reaction/708/52?u=mammi71