Add margins, fix layout at different breakpoints, simplify stylesheet
Ensure margins don't impact full page takeover interactives
Merge branch 'master' into interactive-fixes

Conflicts:
	applications/app/views/fragments/interactiveBody.scala.html
	common/app/assets/stylesheets/module/content/_interactive.scss
Fix white hex value
Merge pull request #6066 from guardian/interactive-fixes

Layout fixes on interactive article pages, reinstate margins.