Scrubber icons.
Merge branch 'master' of github.com:storytellinginnovationlab2013/hazardoushospitals

* 'master' of github.com:storytellinginnovationlab2013/hazardoushospitals:
  fix judy
  next chapter button

Conflicts:
	css/screen.css
	js/script.coffee
	js/script.js