TIMOB-8814 - Simple animation

[pec1985]

Test:

var win = Ti.UI.createWindow({
    title : 'Window',
    backgroundColor : '#28292c',
    barColor : '#28292c'
});

var view = Ti.UI.createView({
    top: 10,
    left: 10,
    width: 100,
    height: 100,
    backgroundColor: 'red'
});

var btn1 = Ti.UI.createButton({
    title: 'left 10, top: 10, opacity: 0.3',
    bottom: 60
});

var btn2 = Ti.UI.createButton({
    title: 'left: 200, top: 100, duration: 2000, opacity: 1',
    bottom: 0,
});

win.add(btn1);
win.add(btn2);
win.add(view);

btn1.addEventListener('click', function(){
    var animation = Ti.UI.createAnimation({
        left: 10,
        top: 10,
        opacity: 0.3,
        duration: 1000
    });
    view.animate(animation);
});

btn2.addEventListener('click', function(){
    view.animate({
        left: 200,
        top: 100,
        duration: 2000,
        opacity: 1
    }, function(e){
        alert('end');
        Ti.API.info(this);
        Ti.API.info(JSON.stringify(this));
    });
});

win.open();

[joshthecoder]

We should not add another V8 string conversion method. Use V8Utils V8StringToQString().
You can get a std::string if you really need it from a QString using toStdString().

We should really void std::string since it isn't unicode safe, but for layout properties it might be okay for now.

[joshthecoder]

Code review finished. Please address comments and also re-merge with master to fix merge conflicts. Thanks.

[pec1985]

Fixed PR, there were several conflicts from different pull requests

[joshthecoder]

Tested and code reviewed. LGTM.