Fix: libcrmcommon: fix NLS issues with option meta-data

Functionize adding a longdesc or shortdesc element to option meta-data,
to fix some Native Language Support issues:

• The OCF standard requires that all longdesc elements be listed before all shortdesc elements (previously the "en" longdesc and shortdesc were listed, followed by the translated longdesc and shortdesc)

• Display the localized description only if a translation is available (i.e. the result is different from the "en" version)

• If the parameter has enumerated values, the "Allowed values:" string would previously not be translated