Support resource_type and resource references

Hi,

please support resource_type and resource references in WADL files. So that following is supported:

  <resources base="http://localhost:8080/">
    <resource path="/bookstore/{id}" type="#bookResource"/>
    <resource path="/books">
      <resource path="/bookstore/{id}" type="#bookResource"/>
    </resource>
  </resources>

  <resource_type id="bookResource">
    <param name="id" style="template"/>
    <method name="GET">
      <response>
        <representation mediaType="application/xml" element="ns:thebook"/>
      </response>
    </method>
  </resource_type>

instead of

  <resources base="http://localhost:8080/">
    <resource path="/bookstore/{id}">
      <param name="id" style="template"/>
      <method name="GET">
        <response>
          <representation mediaType="application/xml" element="ns:thebook"/>
        </response>
      </method>
    </resource>
    <resource path="/books">
      <resource path="/bookstore/{id}">
        <param name="id" style="template"/>
        <method name="GET">
          <response>
            <representation mediaType="application/xml" element="ns:thebook"/>
          </response>
        </method>
      </resource>
    </resource>
  </resources>

(Example was borrowed from http://cxf.apache.org/docs/jaxrs-services-description.html)

Please note that SoapUI will load a WADL with resource references but the nodes referencing a resource type are empty.

Thanks,
-Josef