74977456 'Articles model/controller/view specs refactoring'

https://www.pivotaltracker.com/story/show/74977456
(part of epic 74977456 https://www.pivotaltracker.com/epic/show/1288994)
I take that back, after a little bit of digging, `build_stubbed` isn't actually doing what I thought stubs do, in fact, use `build_stubbed` everywhere :smile: