create "help" menu group (#989)

shadowsocks-csharp/Data/cn.txt

@@ -33,6 +33,7 @@ Check for Updates at Startup=启动时检查更新
 Check Pre-release Version=检查测试版更新
 Edit Hotkeys...=编辑快捷键...
 About...=关于...
+Help=帮助
 Quit=退出
 Edit Servers=编辑服务器
 Load Balance=负载均衡

shadowsocks-csharp/Data/zh_tw.txt

@@ -33,6 +33,7 @@ Check for Updates at Startup=啟動時檢查更新
 Check Pre-release Version=檢查發行前版本更新
 Edit Hotkeys...=編輯快速鍵...
 About...=關於...
+Help=幫助
 Quit=結束
 Edit Servers=編輯伺服器
 Load Balance=負載平衡

shadowsocks-csharp/View/MenuViewController.cs

@@ -287,16 +287,18 @@ namespace Shadowsocks.View
                 this.AutoStartupItem = CreateMenuItem("Start on Boot", new EventHandler(this.AutoStartupItem_Click)),
                 this.ShareOverLANItem = CreateMenuItem("Allow Clients from LAN", new EventHandler(this.ShareOverLANItem_Click)),
                 new MenuItem("-"),
-                CreateMenuItem("Show Logs...", new EventHandler(this.ShowLogItem_Click)),
-                this.VerboseLoggingToggleItem = CreateMenuItem( "Verbose Logging", new EventHandler(this.VerboseLoggingToggleItem_Click) ),
                 this.hotKeyItem = CreateMenuItem("Edit Hotkeys...", new EventHandler(this.hotKeyItem_Click)),
-                CreateMenuGroup("Updates...", new MenuItem[] {
-                    CreateMenuItem("Check for Updates...", new EventHandler(this.checkUpdatesItem_Click)),
-                    new MenuItem("-"),
-                    this.autoCheckUpdatesToggleItem = CreateMenuItem("Check for Updates at Startup", new EventHandler(this.autoCheckUpdatesToggleItem_Click)),
-                    this.checkPreReleaseToggleItem = CreateMenuItem("Check Pre-release Version", new EventHandler(this.checkPreReleaseToggleItem_Click)),
+                CreateMenuGroup("Help", new MenuItem[] {
+                    CreateMenuItem("Show Logs...", new EventHandler(this.ShowLogItem_Click)),
+                    this.VerboseLoggingToggleItem = CreateMenuItem( "Verbose Logging", new EventHandler(this.VerboseLoggingToggleItem_Click) ),
+                    CreateMenuGroup("Updates...", new MenuItem[] {
+                        CreateMenuItem("Check for Updates...", new EventHandler(this.checkUpdatesItem_Click)),
+                        new MenuItem("-"),
+                        this.autoCheckUpdatesToggleItem = CreateMenuItem("Check for Updates at Startup", new EventHandler(this.autoCheckUpdatesToggleItem_Click)),
+                        this.checkPreReleaseToggleItem = CreateMenuItem("Check Pre-release Version", new EventHandler(this.checkPreReleaseToggleItem_Click)),
+                    }),
+                    CreateMenuItem("About...", new EventHandler(this.AboutItem_Click)),
                 }),
-                CreateMenuItem("About...", new EventHandler(this.AboutItem_Click)),
                 new MenuItem("-"),
                 CreateMenuItem("Quit", new EventHandler(this.Quit_Click))
             });