Expose "allowNativeResize" in the API for TextAreaItem

[daviddb]

In the previous SmartGWT 2.5 version TextAreaItems were able to resize (if the browser allowed it), in the current 3.0 version it is default not possible to resize a TextAreaItem. Is it possible to enable the resizing other then setting the attribute 'allowNativeResize' to true? For instance, can it be added to the API to modify this functionality?

[Isomorphic]

Setting the attribute is the way to do it for now. It's off by default because it breaks the form layout and there is no way for us to detect that the TextAreaItem has been resized (some browsers document that an onresize handler fires but in our testing this doesn't actually happen).