[openstreetmap/openstreetmap-website] add banner for state of the map 2020 (#2684)

[Tom Hughes]

Merged as d49771ba95766b62534c607d2ab28a1a41aae14b.

-- 
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/pull/2684#issuecomment-652362951
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/rails-dev/attachments/20200701/49b03c05/attachment.htm>