Add "FactoryGirl.build_stubbed" back in
Add "FactoryGirl.build_stubbed" back in

This passes on CI with a clean Bundle, and there's general agreement
that it's a good change.

This reverts commit 13ce6d01b282aa89162131763711fc6176edf3ba.

hotvulcan/whitehall,YOTOV-LIMITED/whitehall,alphagov/whitehall,YOTOV-LIMITED/whitehall,YOTOV-LIMITED/whitehall,hotvulcan/whitehall,robinwhittleton/whitehall,askl56/whitehall,robinwhittleton/whitehall,hotvulcan/whitehall,alphagov/whitehall,ggoral/whitehall,askl56/whitehall,robinwhittleton/whitehall,askl56/whitehall,hotvulcan/whitehall,YOTOV-LIMITED/whitehall,alphagov/whitehall,askl56/whitehall,ggoral/whitehall,robinwhittleton/whitehall,ggoral/whitehall,alphagov/whitehall,ggoral/whitehall