Added fingerprinting and optimization of CSS/JS
Added fingerprinting and optimization of CSS/JS

Adds an optional dependency on closure-compiler for JS and one
yuicompressor for CSS

Need to enable YUI for JS too!

eudicots/Cactus,dreadatour/Cactus,dreadatour/Cactus,andyzsf/Cactus-,chaudum/Cactus,Knownly/Cactus,ibarria0/Cactus,danielmorosan/Cactus,eudicots/Cactus,PegasusWang/Cactus,koenbok/Cactus,andyzsf/Cactus-,koenbok/Cactus,andyzsf/Cactus-,eudicots/Cactus,danielmorosan/Cactus,chaudum/Cactus,ibarria0/Cactus,Bluetide/Cactus,fjxhkj/Cactus,PegasusWang/Cactus,juvham/Cactus,koenbok/Cactus,fjxhkj/Cactus,juvham/Cactus,gone/Cactus,Bluetide/Cactus,Knownly/Cactus,koobs/Cactus,Knownly/Cactus,page-io/Cactus,fjxhkj/Cactus,PegasusWang/Cactus,juvham/Cactus,gone/Cactus,Bluetide/Cactus,page-io/Cactus,gone/Cactus,koobs/Cactus,page-io/Cactus,chaudum/Cactus,dreadatour/Cactus,ibarria0/Cactus,koobs/Cactus,danielmorosan/Cactus