Ajout de la fonction register et de la liste de users
Merge branch 'auth'

Conflicts:
	.c9revisions/public/js/app.js.c9save
	.c9revisions/public/js/controllers.js.c9save
	.c9revisions/routes/api.js.c9save
	.c9revisions/routes/index.js.c9save
	.c9revisions/views/index.jade.c9save
	.c9revisions/views/partials/index.jade.c9save
	.c9revisions/views/partials/layout.jade.c9save
	.c9revisions/views/partials/register.jade.c9save
	views/partials/register.jade