improving layout for ministers counts on how gov works page

https://www.pivotaltracker.com/story/show/44655539
Merge pull request #241 from alphagov/adding-responsiveness-to-minister-numbers

Improving mobile layout for ministers counts on how gov works page

https://www.pivotaltracker.com/story/show/44655539
Rename filter key for locations to world_locations

This is a bug fix for world locaiton pages

https://www.pivotaltracker.com/story/show/44710407
Fix bad db schema migration change