MainPage should extend Widget instead of Composite

[halkosajtarevic]

In the MainPage.java you are extending from Composite although you are using setElement instead of initWidget - this causes an exception at runtime.

[zak905]

Thanks for your remark. it's fixed now: edb3d24
For your information, there is no need to extend widget, the issue happens when initWidget() is not called with Composite. I just changed the type parameter of uiBinder from Element to Widget, and also changed the root element of the template from div to HTMLPanel.

[halkosajtarevic]

I know - but if you extend Widget, you don't have to call "initWidget()" - both ways are correct :)