Relativise url. Get hostname from a map.
Construct correct viewer url
Better concatenation
Tweaked the url validation rules for images...

And wrote a test
Oops, I had the wrong name
Merge pull request #2289 from guardian/image-names

Tweaked the url validation rules for images...
Merge pull request #2288 from guardian/hide-ads-on-rotate

Hide ads on rotate
Merge pull request #2272 from guardian/xss-iframe

Prevent XSS iframe exploit
Revert "Debounce the resize"

This reverts commit f01c5605362415932079d35840a756737e3f6bd1.
Use visibility rather than display:none so we retain the element height
Merge branch 'master' of github.com:guardian/frontend into hide-ads-on-rotate