[ALOY-171] "src" and "type" attributes from <Require> should not be passed to the generated code

<Require type="widget" src="com.appc.someWidget" id="theWidget"/> 

$.theWidget = new (Alloy.getWidget("com.appc.someWidget"))({
    type: "widget",
    src: "com.appc.someWidget"
});

$.theWidget = new (Alloy.getWidget("com.appc.someWidget"))();