title: Sonata admin tabs in page
body: <p>I use Sonata admin Generator.
  I'd like to create multiple lists from a symfony class.
  For example I have a list of invoices and I would like to create a tab with paid bills, an other tab with pending bills and a last tab with invoices disabled.
  This status is in the class.
  I saw <a href="http://demo.sonata-project.org/admin/sonata/media/gallery/list?context=sonata_product" rel="nofollow">this page</a>(admin/admin) in the Sonata demo who use context but I wouldn't like install mediabundle if it's possible.</p>