Close the pop-up automatically on reset
Close the pop-up automatically on reset

The pop-up will be closed automatically on clear (addresses #26).
carlescs/bootstrap-ui-datetime-picker,Gillardo/bootstrap-ui-datetime-picker,Gillardo/bootstrap-ui-datetime-picker,carlescs/bootstrap-ui-datetime-picker,saike/bootstrap-ui-datetime-picker,saike/bootstrap-ui-datetime-picker