[FEATURE] add option to convert referenced default language elements to all language insert records

Optional it allows to convert default language references to be converted to all language insert records.
With correct config.sys_language_overlay setting this would work like the templavoila references to default records.
If the referenced element is not default language or has no parent language record, the normal behaviour is used (that is why the option regarding whether to use parent uid for insert records or translated content element uid might still result in differences).