[Tagging] housenumber on node and area

[Andreas Goss]

> That is the same number both on a node (once) and on the way/relation
> *that this node belongs to* (once)?

Do you mean area when you say way? I think if a building has the address 
then you should not have a node for just the address. If it's a amenity, 
craft etc. then it's fine to put the address on that, too.

PS: Yay contact: guess that will never end...
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openstreetmap.org/user/AndiG88
wiki.openstreetmap.org/wiki/User:AndiG88‎