position of sponsored by logo on some breakpoints
don't use bonzo's class manipulation for svgs
styling positions for breakpoints across fronts ans articles
adding a mixin for replicated declarations
Merge pull request #5657 from guardian/sentry-contains-error

Fix Sentry's 'contains' errors
peer review and lint fixes
Merge pull request #5662 from guardian/commercial-sponsoredby-fixes

Commercial sponsoredby fixes
Merge branch 'master' of github.com:guardian/frontend into unremification

Conflicts:
	common/app/assets/stylesheets/module/_adslot.scss