using sinonjs
using shim for imager
check images on popular
allow forcing upgrade of images
force upgrade in first container
correct styling
fixed hard-coded class
correct location of modules
spawn true
Merge pull request #2309 from guardian/images-refactor

Force image upgrade
Merge branch 'master' of github.com:guardian/frontend into news-container-v2
Merge branch 'news-container-v2' of github.com:guardian/frontend into news-container-v2