Update expiring commercial switches
Updating commercial switches.
Add a header identifying the backend to all responses.

this can now be logged in Fastly for debugging purposes.
reduce space between icon and headline on media tone pages
Reverting ellipsis fix.
Changing touchable zone expansion just to mobile.
Merge pull request #6836 from guardian/backend-header

Add a header identifying the backend to all responses.
Adding page for containers
Realign tagline on logo
Realign position
tighten mobile dropdown
Revert "Changing touchable zone expansion just to mobile."

This reverts commit 563ed86509bbcfd12bcacd7760e2e6f1e38933da.
only kill epllisis
Merge pull request #6847 from guardian/navigation-fix

Stop mobile nav wiggling about
Do not poll for updates if there will be no updates
Merge pull request #6849 from guardian/do-not-call-front-index-if-not-necessary

Do not poll for updates if there will be no updates
sponsored front
Add data-link-name to kickers
adding link; correct keywords
remove unused import