changing ad insertion rules
restoring test
Small Changes to Sponsorship Page
Merge pull request #5156 from guardian/article-ads

changing ad insertion rules
Merge pull request #5164 from guardian/kc-sponsor-page

Small Changes to Sponsorship Page
Use @paperboyo's optimised observer logos

- nice
Merge pull request #5166 from guardian/optimise-observer-logos

Optimise Observer logos
Merge branch 'master' of github.com:guardian/frontend into die-management-die