calendar/meta/calendar.json

{
 "calendar": {
                "requires": [
                    "calendar-base",
                    "calendarnavigator"
                ],
                "lang" : [
                    "de",
                    "en",
                    "fr",
                    "ja",
                    "nb-NO",
                    "pt-BR",
                    "ru",
                    "zh-HANT-TW"
                ],
                "skinnable": true
            }
}