Move latest news back into featured element

Moving the latest news block back after it was moved out in a2f9af94.
This inadvertantly caused display issues when there were only 1 or 4
items were featured.

https://www.pivotaltracker.com/story/show/49185791
Merge pull request #540 from alphagov/fix-org-news-blocks

Move latest news back into featured element

https://www.pivotaltracker.com/story/show/49185791