Changed application structure -- tailored to nodejs

Previously, when using Angular, HTML code was contained inside the
controllers. This has been changed so that all HTML code resides in the
views. A filter panel has been added in all of the views. Additionally,
the simulator feature has been implemented.
Started implementing live stream feature.
Adding socket.io library.
Merge branch 'livestream'

Conflicts:
	app/js/barController.js
	app/js/lineController.js
	app/static/js/graphUtil.js