[Talk-GB] ooc.* legend

[Andy Mabbett]

I've added links to <http://ooc.openstreetmap.org/>, from the template
seen by Wikipedia users when they click on coordinates in articles
about UK subjects.

The blue legend has five rows, one for OSM and four for various OS maps.

Could we add dates or date ranges for the latter, for the benefit of
those unfamilar with the various series?

-- 
Andy Mabbett
@pigsonthewing
http://pigsonthewing.org.uk