Recompiled CSS with compass 1.0

Minor syntactical changes, like alphabetical ordering of filters, uppercasing of hex colours. See http://compass-style.org/blog/2014/08/15/omg-compass-1-0/.
Shouldn't include any user-visible changes, but helps to avoid confusion with the next person trying to modify the CSS (Luke is currently struggling with that)
Fixed duplicate CSS scoping in AssetAdmin.scss