[view] ImageView stretc true as default

demo/src/demo/DemoView.yaml

@@ -5,7 +5,6 @@ views:
     - $type: haxework.view.ImageView
       geometry.padding: 10
       image: $r:image:logo
-      stretch: true
     - id: tabs
       $type: haxework.view.HGroupView
       layout.margin: 5

demo/src/demo/form/TailForm.hx

@@ -12,6 +12,7 @@ import haxework.view.utils.DrawUtil.FillType;
         var view:IView<Dynamic>;
         if (value.image != null) {
             var imageView = new ImageView();
+            imageView.stretch = false;
             imageView.skinId = "border";
             imageView.fillType = FillType.CONTAIN;
             imageView.imageUrl = value.image.url;