reoganize usings

Author: paladique

src/GitHub.UI.Reactive/Controls/ViewBase.cs

@@ -5,10 +5,10 @@
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Input;
+using System.Windows.Automation.Peers;
 using GitHub.ViewModels;
 using NullGuard;
 using ReactiveUI;
-using System.Windows.Automation.Peers;
 
 namespace GitHub.UI
 {