While in dev-build, devs will see a warning in their console if they are working on something that does not have a Cache-Control header.

EVERYTHING is cached.
Merge branch 'master' of github.com:guardian/frontend into cache-warning
While in dev-build, devs will see a warning in their console if they are working on something that does not have a Cache-Control header.

EVERYTHING is cached.
Merge pull request #1926 from guardian/cache-warning

Cache-Control warning