[openstreetmap-website] Add a paragraph on the rules in OSM or the lack of them. (#993)

[simonpoole]

This is food for thought for now: what can we say in this paragraph without scaring off people, but still getting the proper message across (and keeping things short and to the point)? 

This PR was prompted in part by "overhearing" a mapper complaining bitterly about not being pointed at the guidelines before the "accident" happened and it shouldn't be thought of as import hostile, if at all it gives people a fighting chance to do things right.

And yes it would need an icon before being merged. 
You can view, comment on, or merge this pull request online at:

  https://github.com/openstreetmap/openstreetmap-website/pull/993

-- Commit Summary --

  * Add a paragraph on the rules in OSM or the lack of them.

-- File Changes --

    M app/views/site/welcome.html.erb (6)
    M config/locales/en.yml (8)

-- Patch Links --

https://github.com/openstreetmap/openstreetmap-website/pull/993.patch
https://github.com/openstreetmap/openstreetmap-website/pull/993.diff

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Reply to this email directly or view it on GitHub:
https://github.com/openstreetmap/openstreetmap-website/pull/993
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