Add tone class to sublink
Add media type class to sublink
Render sublink classes as string
Merge branch 'master' of github.com:guardian/frontend into sublink-tones
Merge branch 'sublink-tones' of github.com:guardian/frontend into sublink-tones
add media types for sublinks
add meida icons on sublinks
Merge pull request #6426 from guardian/sublink-tones

Sublink tones