initial work for modal message type
Tweak styling of message modal
Add new icon for onboarding-modal
copy copy copy
Wrap opt-in message in feature switch
Ensure clicking outside of modal closes it
Merge branch 'onboarding-modal' of github.com:guardian/frontend into onboarding-modal
Fix merge conflicts
Fix typo
We're going classique
Update bean event handler to write cookies
Add a separate alpha cookie for phase two
Merge branch 'master' into onboarding-modal

Conflicts:
	common/app/assets/stylesheets/theme/_global-icons-sprite.scss
Stop message clicks from closing modal messages
Use GU_ALPHA cookie value rather than name for phase two
Label message.js dialogs with aria
Make message accessible whilst hidden
Drop next.theguardian.com references
Update onboarding copy
Merge pull request #2931 from guardian/onboarding-modal

Onboarding modal