Start new comic list in HTML.

def newComic(self, comic):
        """Start new comic list in HTML."""
        if self.lastUrl is not None:
            self.html.write(u'</li>\n')
        if self.lastComic is not None:
            self.html.write(u'</ul>\n')
        self.html.write(u'<li>%s</li>\n' % comic.name)
        self.html.write(u'<ul>\n')