Add this function to your functions.php:

function is_lang($search_lang){
	$return = false;
    $languages = icl_get_languages('skip_missing=0');
    if(!empty($languages)){
        foreach($languages as $lang => $l){
        	if($l['active'] && $lang == $search_lang){
				$return = true;
			}
        }
    }
	return $return;
}

Then in the custom section of the new widget area (for JumpStart):
is_lang(‘es’)

for spanish (see languages and edit in the dark boxes for language ids)

The is_lang() function could also be used like is_page elsewhere in the code.