Brought asset has and artifact in-house

Simple copy n paste of the source code
SBT now starts with sbt version 0.12.2, scala 2.10.0 and play 2.1.0

Lots of stuff still commented out.
Common compiles now.

RequireJS plugin is disabled though
Article now compiles and serves an article.
Updated version of Firefox
Adding latest section
Changed experiemnts route
Added new experiment route to dev-build
Merge pull request #464 from guardian/story

Changed experiemnts route
Added latest fragment
Fixed typo in routes
Merge pull request #466 from guardian/story

Fixed typo in routes
fixed issue with latest logic
Changed story module endpoint to use jsonnotfound
Fixed importance ordering
Merge pull request #467 from guardian/story

Changed story module endpoint to use jsonnotfound
Fixed styling bugs on story module
Merge pull request #468 from guardian/story

Fixes for article story package
Added data-link names to story package
Changed stpry page background