World location news doesn't have organisations

World location news has world organisations not organisations. They are
displayed differently on the frontend.

We do still however want the right default news image for the first
world organisation.

https://www.pivotaltracker.com/story/show/53086407
Merge pull request #669 from alphagov/world-location-news-orgs

World location news doesn't have organisations

https://www.pivotaltracker.com/story/show/53086407