Add membership tests to NGW
responsive css for card change form
add membership files to grunt jshint task
Add an empty line before media queries
stop passing around config, remove bind polyfill
Merge branch 'master' of github.com:guardian/frontend
Added "production office" and operating system to omniture.

This did modify the content api query which caused a data refresh.
Remove title attribute from @image
adding functionality for two and 3 article dfp components
Only Use Primary Keywords to Identify Sponsorships
updating dfp template html
Merge pull request #4869 from guardian/mem-tab-testing

Mem tab: tests
Refactor
update path for $ util to new path
Merge pull request #4937 from guardian/fix-mem-tab-build

Update path for $ util to new path
sass tidying from peer review
more peer review
updating class names
Merge pull request #4936 from guardian/commercial-multi-dfp

Commercial variable number of items in dfp component styling
Merge branch 'master' of github.com:guardian/frontend into omniture-updates