Render a template

        :params template: Template name
        :params kwargs: Template parameters

def template(self, template_filename, **kwargs):
        """
        Render a template

        :params template: Template name
        :params kwargs: Template parameters
        """
        template = renderer.get_template(template_filename)
        kwargs["gns3_version"] = __version__
        kwargs["gns3_host"] = self._request.host
        self.html(template.render(**kwargs))