Optimize image assets with ImageOptim
Audience science currently relies on the URL to figure out which platform we are on. After www.theguardian.com we will need to be more explicit.
Revert "Optimize image assets with ImageOptim"

This reverts commit 9e0d4a6b60e68496e0f5e087e19a984ea8d97182.
Merge branch 'master' of github.com:guardian/frontend into dotcom
Optimise assets that are not autogenerated
Merge branch 'master' of github.com:guardian/frontend into optimise-image-assets
Use proper alt for trails
CSS references the correct md5 of modified assets
Use url hash to preserve back button on lightbox galleries
Fix integration tests
Another attempt at getting thumbs right (1:1 aspect now)
Update audience-science.js
Merge pull request #1169 from guardian/dotcom

Audience Science platform
Tweak positioning of portraits
Merge pull request #1175 from guardian/cricket

Cricket
Using pushState instead of location.hash to preserve back button
JSLint fix
Add tracking when users exit lightbox via back button
Merge pull request #1173 from guardian/fullscreen-galleries

Lightbox gallery fixes
Initial janitorial/feeds application.