Avoid failure when multiple resource identifier are set

[fxprunayre]

• Add support for multiple resource identifiers
• Concatenate codespace with code if codespace is set
• Take first URI matching http pattern (and log ignored ones).
• Update to XSLT version 2 (required for the matches function)

eg. https://metawal.wallonie.be/geonetwork/srv/eng/catalog.search#/metadata/44a75314-f27e-4952-b96a-50f1408232b3

          <gmd:identifier>
            <gmd:RS_Identifier>
              <gmd:code>
                <gco:CharacterString>44a75314-f27e-4952-b96a-50f1408232b3</gco:CharacterString>
              </gmd:code>
              <gmd:codeSpace>
                <gco:CharacterString>http://geodata.wallonie.be/id/</gco:CharacterString>
              </gmd:codeSpace>
            </gmd:RS_Identifier>
          </gmd:identifier>
          <gmd:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>LU_PlannedLandUse_PDS</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>