Sorting of cabinet ministers
Ordering is handled in the admin interface and db
Data migration to set the seniority for cabinet ministers

taken from http://www.number10.gov.uk/the-coalition/the-cabinet/
Fix Controller tests

seniority is set in the DB now
Add page title and fix indentation
Test for CabinetMinistersController
Show person name on cabinet minister page
Add cucumber feature for reordering cabinet ministers
Only allow GDS editors to reorder cabinet ministers
Need to be gds editor to reorder cabinet ministers
Merge pull request #417 from alphagov/admin-order-ministers

Allow sort order of cabinet ministers to be curated

https://www.pivotaltracker.com/story/show/47058755