Method mergeData

src/js/language/Language.js:45–55

* Reimplement Util.mergeData to handle nested dictionaries * @param {object} lang_json

(lang_json)

     * @param {object} lang_json 
     */
    mergeData(lang_json) {
        for (k in LANGUAGES.en) {
            if (lang_json[k]) {
                if (typeof(this[k]) == 'object') {
                    mergeData(lang_json[k], this[k]);
                } else {
                    this[k] = lang_json[k]; // strings, mostly
                }
            }
        }
    }

    formatBigYear(bigyear, format_name) {
        var the_year = bigyear.year;