Allow to ingest appname + a prolog HTML fragment

src/main/java/info/textgrid/services/aggregator/Help.java

@@ -14,8 +14,10 @@
 import javax.ws.rs.core.UriInfo;
 import javax.xml.transform.stream.StreamSource;
 
+import net.sf.saxon.s9api.QName;
 import net.sf.saxon.s9api.SaxonApiException;
 import net.sf.saxon.s9api.Serializer;
+import net.sf.saxon.s9api.XdmAtomicValue;
 import net.sf.saxon.s9api.XsltTransformer;
 
 import com.google.common.base.Optional;
@@ -46,6 +48,7 @@ public void write(OutputStream output) throws IOException,
 			final Serializer serializer = stylesheetManager.xsltProcessor.newSerializer(output);
 			transformer.setDestination(serializer);
 			transformer.setSource(new StreamSource(wadlURL.openStream(), wadlURL.toString()));
+			transformer.setParameter(new QName("apptitle"), new XdmAtomicValue("TextGrid Aggregator Service"));
 			transformer.transform();
 		} catch (final SaxonApiException e) {
 			throw new WebApplicationException(e);

src/main/webapp/WEB-INF/stylesheets/wadl_documentation-2009-02.xsl

@@ -47,7 +47,8 @@
     />
 
     <xsl:variable name="wadl-ns">http://wadl.dev.java.net/2009/02</xsl:variable>
-
+    <xsl:param name="apptitle">My Web Application</xsl:param>
+    <xsl:param name="prologHtml"/>
     
     <!-- expand @hrefs, @types into a full tree -->
     
@@ -170,7 +171,7 @@
         <xsl:apply-templates select="/wadl:application/wadl:resources/descendant::wadl:resource[@type]" mode="include-href"/>
         <xsl:apply-templates select="$resources/descendant::wadl:*[@href]" mode="include-href"/>
     </xsl:variable>
-        <xsl:param name="apptitle">My Web Application</xsl:param>
+        
     
     <xsl:template match="wadl:include[@href]" mode="include-grammar">
         <xsl:variable name="included" select="document(@href, /)/*"></xsl:variable>
@@ -313,6 +314,7 @@
                         <xsl:otherwise><xsl:value-of select="$apptitle"/></xsl:otherwise>
                     </xsl:choose>
                 </h1>
+                <xsl:value-of select="$prologHtml" disable-output-escaping="yes"/>
                 <xsl:apply-templates select="wadl:doc"/>                
                 <ul>
                     <li><a href="#resources">Resources</a>