Created vs. Resolved Gadget configured for "weekly" grouping calculates weeks using default locale rather than instance configuration

line 402:
final StatisticsMapper createdMapper = new DatePeriodStatisticsMapper(ChartUtil.getTimePeriodClass(periodName), DocumentConstants.ISSUE_CREATED, getTimeZone());

line 413:
StatisticsMapper resolvedMapper = new DatePeriodStatisticsMapper(ChartUtil.getTimePeriodClass(periodName), DocumentConstants.ISSUE_RESOLUTION_DATE, getTimeZone());

import org.jfree.data.time.Week;

...

public static Class getTimePeriodClass(ChartFactory.PeriodName periodName)
{
    switch(periodName)
    {
        case daily:
            return Day.class;
        case hourly:
            return Hour.class;
        case weekly:
            return Week.class;
        case monthly:
            return Month.class;
        case quarterly:
            return Quarter.class;
        case yearly:
            return Year.class;
        default:
            return Day.class;
    }
}

public TimePeriod getValueFromLuceneField(String documentValue)
{
    Date date = LuceneUtils.stringToDate(documentValue);
    if (date == null)
    {
        return null;
    }
    return RegularTimePeriod.createInstance(timePeriodClass, date, periodTimeZone);
}

import java.util.Calendar;

...

public Week(Date time, TimeZone zone) {
    // defer argument checking...
    this(time, zone, Locale.getDefault());
}

...

public Week(Date time, TimeZone zone, Locale locale) {

    ...

    Calendar calendar = Calendar.getInstance(zone, locale);
    calendar.setTime(time);

    // sometimes the last few days of the year are considered to fall in
    // the *first* week of the following year.  Refer to the Javadocs for
    // GregorianCalendar.
    int tempWeek = calendar.get(Calendar.WEEK_OF_YEAR);
    if (tempWeek == 1
            && calendar.get(Calendar.MONTH) == Calendar.DECEMBER) {
        this.week = 1;
        this.year = (short) (calendar.get(Calendar.YEAR) + 1);
    }
    else {
        this.week = (byte) Math.min(tempWeek, LAST_WEEK_IN_YEAR);
        int yyyy = calendar.get(Calendar.YEAR);
        // alternatively, sometimes the first few days of the year are
        // considered to fall in the *last* week of the previous year...
        if (calendar.get(Calendar.MONTH) == Calendar.JANUARY
                && this.week >= 52) {
            yyyy--;
        }
        this.year = (short) yyyy;
    }
    peg(calendar);
}