First try
Moved styles to component
Merge branch 'master' into commercial-travel-component

Conflicts:
	article/app/views/fragments/articleBody.scala.html
Use mpu slot for now
Test masterclass component
Fix jshint
Sample templates
Adding dev route
Some test styles
Adding AB test for new components
Adding masterclasses template
Remove Eventbrite stub data
Style fixes
Enforce a .json extension (in DEV mode only).

Also changed the only example I found of it not doing so.

This is needed by some changes I am making to the routing.
Article layout kicks in at 9 columns
Remove legacy article layout classes
Remove prefix for v2 article classes
Merge branch 'master' into commercial-travel-component

Conflicts:
	commercial/app/views/fragments/travelOffer.scala.html
	dev-build/conf/routes
Merge branch 'master' of github.com:guardian/frontend into change-mobile-breakpoint

Conflicts:
	common/app/assets/stylesheets/module/_article.scss
Fix alignment of article elements on tablet