Cleanup and make RS5

Author: jeffstall

Samples/Islands/WpfCalculator/CalculatorDemo/App_Demo3.cs

@@ -9,8 +9,8 @@ namespace CalculatorDemo
 {
     public partial class App : Application
     {
-        // Many WinAppSDK APIs require a DispatcherQueue to be running on the thread.  We'll start one when the app starts up
-        // and shut it down when the app is finished.
+        // Many WinAppSDK APIs require a DispatcherQueue to be running on the thread.  We'll start one when the app
+        // starts up and shut it down when the app is finished.
         protected override void OnStartup(StartupEventArgs e)
         {
             _dispatcherQueueController = DispatcherQueueController.CreateOnCurrentThread();

Samples/Islands/WpfCalculator/CalculatorDemo/CalculatorDemo.csproj

@@ -25,6 +25,7 @@
     <FileAlignment>512</FileAlignment>
     <WarningLevel>4</WarningLevel>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <SupportedOSPlatformVersion>10.0.17763.0</SupportedOSPlatformVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x86'">
     <PlatformTarget>x86</PlatformTarget>

Samples/Islands/WpfCalculator/CalculatorDemo/MainWindow_Demo3.cs

@@ -44,7 +44,7 @@ void SetCompactView(bool useCompactView)
 
                 // The AppWindow's CompactOverlay mode will make it always-on-top.
                 _appWindow.SetPresenter(AppWindowPresenterKind.CompactOverlay);
-                _appWindow.ResizeClient(new Windows.Graphics.SizeInt32(200, 200));
+                _appWindow.ResizeClient(new Windows.Graphics.SizeInt32(400, 400));
             }
             else
             {