[openstreetmap/openstreetmap-website] Block VWorld as a source (#1464)

[mxa]

@Andygol I also left some comments (in English) but no answer.
@bhousel I think it should not fail silently, but it should give a message explaining why it is not ok to use non-licensed sources. In fact I think this warning message should pop up any time a custom background is used. If the source is blacklisted, it should say that.
btw, it still works, just tried it.

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/openstreetmap/openstreetmap-website/issues/1464#issuecomment-282254610
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/rails-dev/attachments/20170224/c7685766/attachment.html>