old_contents: 
  
  import horizon
  from django.utils.translation import ugettext_lazy as _
  
  
  class ContribDashboard(horizon.Dashboard):
      name = _("Horizon Contrib")
      slug = "contrib"
      panels = ('forms', 'generic')
  
      default_panel = 'forms'
  
      nav = False
  
  horizon.register(ContribDashboard)
  
new_contents: 
  
  import horizon
  from django.utils.translation import ugettext_lazy as _
  
  
  class ContribDashboard(horizon.Dashboard):
      name = _("Horizon Contrib")
      slug = "contrib"
      panels = ('forms', 'generic')
  
      default_panel = 'forms'
  
      nav = False
  
      def get_absolute_url(self):
          # TODO: we haven't index
          # maybe search some model and returns his index
          return '/'
  
  
  horizon.register(ContribDashboard)
  
subject: fix missing default index view