Re architect identity styles
Remove unused colour helper
Merge branch 'breakpoint-refactor' into disc-refactor
Spacing fix
Merge branch 'master' of github.com:guardian/frontend into disc-refactor
Merge branch 'master' into disc-refactor
Merge branch 'breakpoint-refactor' into disc-refactor
Merge pull request #5467 from guardian/disc-refactor

Identity styles re-architecture