Add handoff banner to the style guide
Change handoff to message bar component
Add optout path and controller
Remove ResponsiveController and create OptOutController
Change cookie name to match with nginx rule
Remove rails cookie signed to match with ngix value
Add opt-out button in header
Revert "Add opt-out button in header"

This reverts commit 721603ca6b9ce9b68d7b9e963f165795701130a2.
Add opt_out bar
Remove unused style
Add translations to opt_out bar
Remove message bar
Refactor component page
Add opt-out bar bg colour
Add initial styles to the opt-out bar
Add temporary desktop placeholder icon
Zero out padding on unstyled buttons
Change page template to reference opt out partial
Change button_to to button_tag
Change the content of the opt out message in EN