[openstreetmap-website] Related objects in XML (#768)

[Paul Norman]

> Including complete parent objects would result in long and complex queries (while it can be supported).

The long part of the query is the same if you want to either get the parents of an object or know if it has parents. The additional stage of going from knowing it has parents to including the parents adds relatively little query time.

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Reply to this email directly or view it on GitHub:
https://github.com/openstreetmap/openstreetmap-website/issues/768#issuecomment-46821108
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