Optimizing guardian retina logo while we're at it even if we don't use it anymore
Remove unused image-white icon
Merge branch 'master' of github.com:guardian/frontend into remove-white-photo-icon

Conflicts:
	common/app/assets/images/global/sprite.png
Remove minified CSS files
Merge pull request #1911 from guardian/remove-white-photo-icon

Remove white photo icon