Managing multiple individualName

[dportoles]

Currently the XSLT raises an error when there are multiple individualName in ISO metadata for pointOfContact.

An example of metadata: https://www.idee.es/csw-codsi-idee/srv/spa/catalog.search#/metadata/AU_alava_downloadservice

Related code:
https://github.com/SEMICeu/iso-19139-to-dcat-ap/blob/master/iso-19139-to-dcat-ap.xsl#L1580

I have a workaround using only the first item and not PT_FreeText but I think it should be improved.

Changing previous line for:
<xsl:value-of select="normalize-space(gmd:individualName/*)"/>
for
<xsl:value-of select="normalize-space(gmd:individualName/gco:CharacterString)"/>