gmd:language / add support for gmd:LanguageCode

[fxp]

Currently geonetwork is using:

<gmd:language>

<gco:CharacterString>ger</gco:CharacterString>

</gmd:language>

Another option is: <gmd:language>

<gmd:LanguageCode

codeList="./resources/codeList.xml#LanguageCode" codeListValue="spa"></gmd:LanguageCode>

</gmd:language>

Both are ISO valid.

gmd:LanguageCode is used in INSPIRE metadata IR examples and validator so it could be useful to support this element.

[fxp]

Need updates in:

• schematron rules
• indexing
• iso19139 XSL layout
• iso19139 labels

I suggest to use schema suggestion:

<field name="gmd:language">
  <suggest name="gco:CharacterString"/>
  <suggest name="gmd:LanguageCode"/>
</field>

then user could use both.

Questions:

• Update default templates to use gmd:LanguageCode ?

[fxp]

Needs also updates in:

• CSW OGC full

[fxp]

r6851

[fxp]

r6853