[TIMOB-15051] iOS7: On modal close index window status bar space is removed and content is moved up

<Alloy>
	<Window>
		<NavigationGroup platform="ios">
            <Window title="Home" backgroundColor="white">
            	<LeftNavButton>
			        <Button onClick="openAbout">About</Button>
			    </LeftNavButton>
            	<RightNavButton>
			        <Button onClick="openSettings">Settings</Button>
			    </RightNavButton>
            </Window>
        </NavigationGroup>
	</Window>
</Alloy>

$.index.open();

function openAbout(e) {
	var modal = Alloy.createController('about').getView();
    modal.open({modal:true});
}

<Alloy>
    <Window id="win" title="About" backgroundColor="white">
    	<LeftNavButton>
			<Button onClick="handleClick">Cancel</Button>
		</LeftNavButton>
	</Window>
</Alloy>

function handleClick(e) {
	$.win.close({animated:true});
}