Get tags types and values with localized names

    language:
      language of tags

def tag_values(request):
    """
    Get tags types and values with localized names

    language:
      language of tags
    """

    data = defaultdict(lambda: {"values": {}})
    for tag in Tag.objects.filter(lang=get_language(request)):
        data[tag.type]["name"] = tag.type_name
        data[tag.type]["values"][tag.value] = tag.value_name

    return render_json(request, data, template='concepts_json.html', help_text=tag_values.__doc__)