Returns the urls for the model.

def get_urls(self):
        """
        Returns the urls for the model.
        """
        urls = super(IPAdmin, self).get_urls()
        my_urls = patterns(
            '',
            url(r'^batch_process_ips/$', self.admin_site.admin_view(self.batch_process_ips_view), name='batch_process_ips_view')
        )
        return my_urls + urls