Removed rel=canonical tags from theguardian.com domain.

Editionalised pages now get...

<link rel="alternate" hreflang="..." href="..." />
Merge branch 'master' of github.com:guardian/frontend into dotcom
Removed rel=canonical tags from theguardian.com domain.

Editionalised pages now get...

<link rel="alternate" hreflang="..." href="..." />
Merge branch 'master' of github.com:guardian/frontend into dotcom
Stop edition urls leaking into m.guardian.co.uk
Merge pull request #1081 from guardian/dotcom

Editionalised pages meta data