Fix a timezone issue.
In normal conditions, the calendar selection are NSDate corresponding to the 00:00 of the selected date. But if the timezone is changed after the GLCalendarView is instantiated, this NSDate may corresponds to other times (e.g. 23:00 if the timezone is one hour earlier)
Fix a timezone issue. In normal conditions, the calendar selection are NSDate corresponding to the 00:00 of the selected date. But if the timezone is changed after the GLCalendarView is instantiated, this NSDate may corresponds to other times (e.g. 23:00 if the timezone is one hour earlier)