[TIMOB-13545] Android: ImageView: Remote image with "@" character doesn't display

*Problem description* If you set an image with a "@" in the path, the image won't be loaded. This is because getCleanUri thinking it's a domain address. Therefore the test on the hash will return false. So the image is downloaded but not drawn. *Repro notes* Paste the @2x URL in the browser to verify the URL is valid. Uncomment cd-mini-graphic image to verify it working for standard images. Only the URL with @2x doesn't work. Works on iOS, not on Android. *Test case*

var win = Ti.UI.createWindow({
	backgroundColor : 'white'
});

var image = Ti.UI.createImageView({
	bottom : 0,
	width : 200,
	height : 200,
	backgroundColor : 'red',
	image : 'http://dl.dropboxusercontent.com/u/255893/appcelerator@2x.png'
	//image : 'http://www.appcelerator.com.s3.amazonaws.com/web/home/platform/cd-mini-graphic.png'
});

win.add(image);
win.open();