Added UI scaffolding for user accounts
Merge remote-tracking branch 'upstream/master' into dev

Conflicts:
	app.js
	public/javascripts/controller.js
	public/stylesheets/style.css
	public/stylesheets/style.styl
	routes/routes.js
	views/about.jade
	views/course.jade
	views/layout.jade
Actually, MongoDB works fine.