Added a switch that lets us enable all embeds.

This is to help us figure out (easlily) which ones work and which do not.
Added a switch that lets us enable all embeds.

This is to help us figure out (easlily) which ones work and which do not.
Merge branch 'embedded' of github.com:guardian/frontend into embedded
Merge pull request #1742 from guardian/embedded

Added a switch that lets us enable all embeds.