support scroll

Author: 任庆伟

src/shared/components/challenge-listing/Filters/DateRangePicker.jsx

@@ -28,7 +28,6 @@ class DateRangePicker extends React.Component {
   render() {
     return (
       <WrappedDateRangePicker
-        numberOfMonths="1"
         focusedInput={this.state.focusedInput}
         isOutsideRange={() => false}
         onDatesChange={this.props.onDatesChange}