refactor: Use correct namespaces in Menu

Author: twpol

Source/Menu/MainForm.cs

@@ -27,6 +27,7 @@
 using System.Windows.Forms;
 using GNU.Gettext;
 using GNU.Gettext.WinForms;
+using Menu.Notifications;
 using Orts.Formats.OR;
 using ORTS.Common;
 using ORTS.Menu;

Source/Menu/Notifications/NotificationManager.cs

@@ -31,7 +31,7 @@
 using ORTS.Settings;
 using ORTS.Updater;
 using static ORTS.Common.SystemInfo;
-using static Menu.NotificationPage;
+using static Menu.Notifications.NotificationPage;
 
 // Behaviour
 // Notifications are read only once as a background task at start into Notifications.
@@ -40,7 +40,7 @@
 // the visibility of each notification in NotificationList is re-assessed. Also its date.
 // Every time the user selects a different notification page, the panel is re-loaded with items for that page.
 
-namespace Menu
+namespace Menu.Notifications
 {
     public class NotificationManager
     {

Source/Menu/Notifications/NotificationPage.cs

@@ -24,7 +24,7 @@
 using Button = System.Windows.Forms.Button;
 using Image = System.Drawing.Image;
 
-namespace Menu
+namespace Menu.Notifications
 {
     /// <summary>
     /// Holds presentation details of the current notification displayed on the panel.

Source/Menu/Notifications/Notifications.cs

@@ -18,7 +18,7 @@
 using System.Collections.Generic;
 
 
-namespace Menu
+namespace Menu.Notifications
 {
     public class Notifications
     {