Fix output name in Application settings project panel.

The output assembly name was always has the extension of .exe when
the project options is opened.

src/Main/Base/Project/Src/Gui/Dialogs/OptionPanels/ProjectOptions/ApplicationSettings.xaml.cs

@@ -137,6 +137,7 @@ namespace ICSharpCode.SharpDevelop.Gui.OptionPanels
 			} else {
 				applicationManifestComboBox.Text = this.ApplicationManifest.Value;
 			}
+			this.projectInformation.OutputTypeName = AssemblyName.Value + CompilableProject.GetExtension(OutputType.Value);
 			IsDirty = false;
 		}