Fix build broken in c030931:

* Update Webapp.featured to return a set of Webapp instances, rather than a
  QuerySet of their FeaturedApp instances.
* Fix incorrect use of the eq_ shortcut in
  TestFeaturedAppQueryset.test_queryset_featured

mkt/webapps/models.py

@@ -525,7 +525,8 @@ class Webapp(Addon):
     @classmethod
     def featured(cls, cat=None, region=None, limit=6, mobile=False,
                  gaia=False):
-        return FeaturedApp.objects.featured(cat, region, limit, mobile, gaia)
+        qs = FeaturedApp.objects.featured(cat, region, limit, mobile, gaia)
+        return [w.app for w in qs]
 
     @classmethod
     def get_excluded_in(cls, region):

mkt/zadmin/tests/test_views.py

@@ -444,7 +444,7 @@ class TestFeaturedAppQueryset(amo.tests.TestCase):
             FeaturedApp.objects.featured()
         ), 'Inactive items in featured queryset'
         limited = FeaturedApp.objects.featured(limit=1).count()
-        assert eq_(limited, 1), '%s items returned, only 1 expected' % limited
+        eq_(limited, 1, '%s items returned, only 1 expected' % limited)
 
 
 class TestAddonSearch(amo.tests.ESTestCase):