confirmation on leaving player
code conventions on app.css
Researched testing and deployment frameworks.
Refractoring angular code.
Removed comma I forgot there.
WIP.
Fixed the navbar mess.
Merge branch 'confirm_nav_out'

Conflicts:
	TODO
	public/babelbooapp/app.js
	public/babelbooapp/play/play.js
Updated TODO.
Simplified css of playlist cards.