[TIMOB-9787] iOS: webview - Webpage does not cover the entire screen after zoom or pinch.

Webpage does not cover the entire screen after zoom or pinch. This is not regression. This issue occurs on 2.0.2 as well. Steps to reproduce: 1. Create an app using the code below. 2. Launch app in portrait mode. 3. Zoom or pinch the view. 4. Change orientation of the screen to landscape. Actual: The webview fails to expand to the width of the screen and leaves the white space at right side of the screen. Expected: The webview should expand to cover the entire screen area on changing orientation.

Titanium.UI.setBackgroundColor('#000');

var win = Titanium.UI.createWindow({  
    title:'Tab 1',
    backgroundColor:'#fff'
});

var webview1 = Ti.UI.createWebView({
			url : 'http://www.appcelerator.com'
		});
win.add(webview1);

win.open();