[Talk-at] toilets:wheelchair and wheelchair=unknown

[marc marc]

Hello,

First of all I apologize for writing in English, but unfortunately I am 
unable to speak German.
Do not hesitate to answer in the language of your choice, I will use a 
translator if necessary.

On the french-speaking and German mailing lists, a discussion took place 
about the problems related to wheelchair tags.
These problems have also affected Austria, it's why I'm posting this 
message.

1) change wheelchair_toilet and wheelchair:toilets to toilets:wheelchair=*
wheelchair_toilet was the old tag before the approved features 
toilets:wheelchair 4 years ago.
wheelchair:toilets was a typo on the German page (it has 
wheelchair:toilets and toilets:wheelchair)
all apps and sites I have check are using toilets:wheelchair or are 
broken but some datas have not yet been migrated
I have do a manuel fix for the 39 affectes objects in Austria
https://www.openstreetmap.org/changeset/54954247

2) purge wheelchair=unknown toilets:wheelchair=unknown and 
wheelchair_toilet=unknown
Rationale : without a wheelchair or toilets:wheelchair tag, 
accessibility of a poi or toilets of a poi is already unknown. It was a 
bug on wheelpmap.org that added the unknown status when a user did not 
fill in all the fields or change the previous value. This bug seems 
fixed because I haven't seen a recent case.
It also happend that a mapper 'll all field that the editor show.

If no one objects, I'll fix it in a few days.

Regards,
Marc