Change Admin ID to use http in dev and permit parameters in callback
Remove unused parts of common authentication
Merge pull request #1867 from guardian/admin-https-dev

Change Admin ID to use http in dev and permit parameters in callback
Merge pull request #1876 from guardian/football

Optimised football Competitions.
Football controllers now get an immutable CompetitionSupport.

As opposed to one that is directly backed by the mutable CompetitionAgent.