fix the issue which lead to InflateException

I see your [issue](https://github.com/jfeinstein10/SlidingMenu/issues/546) on jfeinstein10/SlidingMenu. Your problem is cause by extend <code>SherlockFragmentActivity</code>in <code>DotaStatsActivity</code>.If you want to use <code>Fragment</code> from support library,you must use the <code>FragmentActivity</code>.