Add support for timezones

[HenriBeck]

There is a libary called jstz to detect the browser's timezone and use moment.js and momenttimezone.js to format.
https://github.com/entraigas/jstz

const timezone = jstz.determine().name();

formatDate = (date, format) => {
    const normalTimezone = moment.tz(date, 'Europe/Berlin');
    const convertedDate = normalTimezone.clone().tz(timezone);

    if (format)
        return convertedDate.format(format);
        // Maybe add support for us dates
    else if (region === 'us')
        return convertedDate.format('MM.DD.YYYY | HH:mm');

    return convertedDate.format('DD.MM.YYYY | HH:mm');
};