Add initial `image` resizer project.

The CDN implciations of an image resizer should be evaluated first.
Merge branch 'master' of https://github.com/guardian/frontend into image-resizer

Conflicts:
	project/Frontend.scala
Patched up image server to compile after merge with master
first stab at ab framework
start method
store in cookie
storing in cookie
Quick hack with the a/b test framework to break up the segmentation, from the controller, from the test
Map now fits the viewport
Artistic interpretation of the next design for agents
Remove all those inline 'back to top' links as the 'break the flow' /via @JonHaynes
Make both quotes inline reading experiences
Split out the latest picture gallery from the timeline
Add picture module to the story page
Tidy agent margins
Zoom inset map out, tidy Pictures scala
Take pictures out of the event-block and have the images at 100%
fix UI style bugs
Show all photos in a gallery
Stripping HTML from timeline synopsis