No js- prefixed classes should be in the CSS
remove shame from discussion modules
Merge branch 'master' of github.com:guardian/frontend into shame-js-classes-in-css

Conflicts:
	common/app/assets/stylesheets/module/containers/_section.scss
	common/app/assets/stylesheets/module/containers/_sport.scss
Remove shame- and js- prefixes from collection modifier
Merge pull request #3197 from guardian/shame-js-classes-in-css

No js- prefixed classes should be in the CSS — fixes #1553