initialize UI buildout of post-activated context, add route to 'sandbox'
(probably should scope this to non-production environments)
use substack's 'optimist' to track app arguments, expose PORT in app.js exports
use LESS middleware, add normalize.less file
all pages get normalize.css
un-hardcode socketIO port (was always 5000)
jade templates optionally populate a 'head' block
show/sandbox populates base template
additional styling for UI sandbox
Merge pull request #2 from twinlabs/ui-sandbox-init-postactivecontext

create a 'UI sandbox' endpoint where developers can build and play with UI features