Clearer case class arguments using Options
Add thumbnailPath to reference the i.guim host
All images templates use i.guim host
Explain what Naked means
Thumbnail images in trailblocks point at i.guim
Swap inline images from static.guim to i.guim (jsoup hacking)
Article tests use i.guim
Image server tests
Scope the image replacement to just static
Merge branch 'master' of https://github.com/guardian/frontend into i-guim-all-images

Conflicts:
	video/app/views/video.scala.html
Merge pull request #705 from guardian/i-guim-all-images

i.guim all images