No role="exercise", no appendix list of exercises

ws/Docbook/Extensions/Xsl/docbook2docbook.xsl

@@ -56,7 +56,7 @@
                     <xsl:copy-of select="*"/> 
                 </xsl:when>
                 <xsl:otherwise>
-                    <para>Answer id='<xsl:value-of select="parent::db:qandaentry/@xml:id"/>' not yet published.</para>
+                    <para>Answer id=<xsl:value-of select="parent::db:qandaentry/@xml:id"/> not yet published.</para>
                 </xsl:otherwise>
             </xsl:choose>
         </db:answer>
@@ -65,6 +65,7 @@
     <xsl:template match="db:part">
         <xsl:copy>
             <xsl:apply-templates select="@* | node()"/>
+	    <!--
             <appendix>
                 <title>
                     <xsl:text>Solutions exercises </xsl:text>
@@ -93,6 +94,7 @@
                     </xsl:for-each>
                 </table>
             </appendix>
+	    -->
         </xsl:copy>        
     </xsl:template>