componentWillReceiveProps() is not honouring old state

[gvelo]

when currentView = 'days' and update.open === undefined , if the datepicker state was open, it should remain open. In other words, when currentView = 'days and the parent component re render executing datepicker componentWillReceiveProps(), datepicker will close.

if ( update.open === undefined ){
            if ( this.props.closeOnSelect && this.state.currentView !== 'time' ){
                update.open = false;
            }
            else {
                update.open = this.state.open;
            }
        }

[simeg]

This PR was reverted due to creating other bugs in version 2.8.6. We will have to figure this out in another way.