Fix application list (#891)

* Fix application list

* Convert file extensions to lowercase before comparing

* AcK's requested changes

* fixed bug found by gdkchan's requested changes

* Account for mismatch between LibHac.TitleLanguage and ...System.Language

Ryujinx/Ui/SwitchSettings.cs

@@ -438,9 +438,7 @@ namespace Ryujinx.Ui
 
             MainWindow.SaveConfig();
             MainWindow.ApplyTheme();
-#pragma warning disable CS4014
             MainWindow.UpdateGameTable();
-#pragma warning restore CS4014
             Dispose();
         }