#1391 publishers dialogue and poetry missing in html

[Peter Fleck]

In the stylesheets docbook-xsl-ns-1.79.1

The templates:

<xsl:template match="d:poetry"> and <xsl:template match="d:dialogue"> are available in fo/publishers.xsl

but are missing in html/publishers.xsl , xhtml/publishers.xsl and xhtml-1_1/publishers.xsl files.