Modification du slider et du système de vote

Intégration du star rating
Modification du champs note en flot dans la vdd
Merge branch 'Group' of https://github.com/aureliengiry/mongobox into Group

Conflicts:
	src/Mongobox/Bundle/JukeboxBundle/Resources/public/css/tumblr.css
	src/Mongobox/Bundle/TumblrBundle/Resources/views/Tumblr/tumblr.html.twig