[openstreetmap/openstreetmap-website] Increase may key and value max length (#2025)

Yves Pratter notifications at github.com
Sun Dec 29 14:35:07 UTC 2019

> it serves as a reminder for people that tags are supposed to be human-readable […]
> An opening hours string longer than 255 characters is practically impossible to understand or edit without specialist software

opening hours string are difficult to understand for humans 😉 
But softwares like OsmAnd display it in a human friendly form (or at least just say open or close).
For inscriptions, the tool is a simple editor with a copy and paste to OSM editor.

> If opening hours become more complicated than 255 characters then I would prefer it to just revert to a human-readable string that describes the issue, which is very likely to fit in 255 characters.

We found a case where a public swimming pool have 5 different timetables per week, and 7 for school holidays.
The total length was near 255 characters, but bigger.

SH Mo,Fr 12:00-20:00;
SH Tu 12:00-21:00;
SH We 10:00-18:00;
SH Th 12:00-20:15;
SH Sa,Su 10:00-13:00,15:00-18:00;

Mo 12:00-14:00,17:00-20:00;
Tu 11:45-14:00,16:30-21:00;
We 11:30-13:00,15:00-18:00;
Th 11:45-14:00,16:30-20:00;
Fr 11:45-14:00,17:00-20:00

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