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)
Hi yggie, changing this to build_stubbed causes the Disqus tests to fail... even after adding back in the attributes that I had deleted previously.