[openstreetmap-website] "Part of" list should be uniqued (#707)

[Andy Allan]

When browsing a node, you get shown the list of ways that the node is a part of. However, if the node appears twice, e.g. it's the start/end of an area, it appears twice.

http://api06.dev.openstreetmap.org/node/4295812504

The list of ways should be unique.

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Reply to this email directly or view it on GitHub:
https://github.com/openstreetmap/openstreetmap-website/issues/707
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