Add initial mvt ab cookie.
Allocate users to ab test using mvt cookie value

Move ab test initialise out of app, into ab module
Refactor travel offers loading

Separate associating countries with keywords from loading travel offers.
Fix logo path in the RSS
adding routes for au/us-alpha
adding mapping for alpha container templates
Add alphatest preference endpoint for dropping cookies
Change cookie name
Add UkAlphaSwitch
ability to set where the popular container goes
New style for most read component
Allocate users into fixed value ranges.

Generate mvt cookie before omniture tracking.
Fix ab tests
Add method for getting potential uk alpha path if conditions are right
Change to GU_UK_ALPHA
Better name for preference controller
Merge branch 'master' of github.com:guardian/frontend into unique-id-cookie

Conflicts:
	common/app/assets/javascripts/bootstraps/app.js
More explicit route for uk alpha
Switch route object to new object name
Add path back into if