Uniformise the language code to ISO-639-1 (alpha 2).
Some services and portlets are using the ISO-639-1 (alpha 2) and some other rely on ISO-639-2 (alpha 3). This should be uniformised to easy interoperability.
Some services and portlets are using the ISO-639-1 (alpha 2) and some other rely on ISO-639-2 (alpha 3). This should be uniformised to easy interoperability.