Wrong time localization

[pdinklag]

Reported by @albancolley in #53 :

The localization tag for minutes is wrong in js/dev/mcstats-widgets.js. stat.unit.duration.hours should be stat.unit.duration.minutes

            if(higher || seconds > 60) {
                var minutes = Math.floor(seconds / 60);
                table += `<td class="minutes">${minutes}${**mcstats.localize('stat.unit.duration.hours**')}</td>`

                seconds %= 60;
            } else {
                table += `<td class="minutes"></td>`
            }