Spanish help and link checks for 2.11.2 series

report as of 2.11.2.0rc3:
(base) M-000981:jalview jprocter$ ant -f utils/i18nAnt.xml
Buildfile: /Users/jprocter/git/jalview/utils/i18nAnt.xml

checkLang:
   [script] Warning: Nashorn engine is planned to be removed from a future JDK release
     [echo]
     [echo] Missing message labels in /Users/jprocter/git/jalview/resources/lang/Messages_es.properties compared to Messages.properties
     [echo] label.fetch_uniprot_references=Fetch Uniprot references
     [echo] status.no_structures_discovered_from_3d_beacons=No models discovered from 3D Beacons
     [echo] label.fetch_references_for_3dbeacons=3D Beacons needs Uniprot References. Fetch database references for {0} sequences ?
     [echo] label.fetch_viewer_attributes=Fetch {0} attributes
     [echo] label.proxy_password_required=Proxy password required
     [echo] label.search_3dbeacons=3D-Beacons Search
     [echo] status.searching_3d_beacons=Searching 3D Beacons
     [echo] label.3dbeacons=3D-Beacons
     [echo] label.not_stored=not stored in Preferences file
     [echo] label.fetch_references_for=Fetch database references for {0} sequences ?
     [echo] label.fetch_viewer_attributes_tip=Copy {0} attribute to Jalview feature
     [echo] action.new_structure_view_with=Open new structure view with {0}
     [echo] label.find_models_from_3dbeacons=Search 3D-Beacons for 3D structures and models
     [echo]
     [echo] Missing message labels in Messages.properties compare to /Users/jprocter/git/jalview/resources/lang/Messages_es.properties
     [echo] label.fetch_chimera_attributes=Buscar atributos desde Chimera
     [echo] label.fetch_chimera_attributes_tip=Copiar atributo de Chimera a caracter?stica de Jalview