[AC-3286] ScrollView with views loads very slowly compared to similar native iOS code.

<Alloy>
        <Window class="container" >
            <ScrollView id="scrollView" layout="vertical"></ScrollView>
        </Window>
 </Alloy>

 ".container": {
        backgroundColor:"white"
    }

    var startTime = new Date();
    startTime = startTime.getTime() / 1000;
 
    $.index.addEventListener('postlayout', calculateTimeToLoad);
 
    loadThousandTextFields();
 
    function calculateTimeToLoad() {
        $.index.removeEventListener('postlayout',calculateTimeToLoad);
        var endTime = new Date();
        endTime = endTime.getTime() / 1000.0;
 
        Ti.API.info("Total time taken:" + (endTime - startTime) + " seconds"); 
    }
 
    function loadThousandTextFields() {
        for(var i = 0; i < 1000; i++) {
            $.scrollView.add(Ti.UI.createTextField({
                hintText: "Hint text"
            }));
        }
    }
 
    $.index.open();