editor / add contextual label translation

[fxp]

Add contextual label according to parent element in order to make a distinction between metadata language and dataset language.

Example :

<element name="gmd:language" context="gmd:MD_Metadata" id="3.0">
        <label>Metadata language</label>
        <description>language used for documenting metadata</description>
        <condition>conditional</condition>
    </element>
    <element name="gmd:language" context="gmd:MD_DataIdentification" id="39.0">
        <label>Language</label>
        <description>language(s) used within the dataset</description>
        <help>language(s) used within the dataset</help>
        <_condition>Mandatory</_condition>
    </element>
    

[fxp]

Revision: 5100