Moved background attrib to App tag

This makes things look better under rotation and is generally better for best practices

Author: ferris

MainView.ux

@@ -1,10 +1,10 @@
-<App>
+<App Background="#022328">
 	<iOS.StatusBarConfig Style="Light" />
 	<Android.StatusBarConfig Color="#022328" />
 
 	<Router ux:Name="router" />
 
-	<ClientPanel Background="#022328">
+	<ClientPanel>
 		<Navigator DefaultTemplate="splash">
 			<SplashPage ux:Template="splash" router="router" />
 			<HomePage ux:Template="home" router="router" />