[Tagging] Deprecating wikipedia Tag

[Thorsten Alge]

Well thats a good point. But in my opinion thats where the editor should
support the mapper and load the Description from Wikidata and maybe a
list of available languages for wikipedia articles.

> I think a lot of us mappers  are going to need a lot of convincing,  wikipedia tags, in common with other osm tags, are human readable. 
> When reviewing changes I do not see a number that is meaningless without following the link, and even then the wikidata page looks pretty meaningless. 
> 
> Phil (trigpoint ) 
>