Add performance description field and performance view
Update performance retrieving
Merge pull request #1 from jcdelmas/master

Add performance description field and performance view, and plug performance retreiving on new service
Merge remote-tracking branch 'ippon/master'

Conflicts:
	app/scripts/app.js
	app/scripts/controllers/performance.js
	app/views/event.html
	app/views/performance.html