code_review: PR #657

* add hotkey `Ctrl+Down/⌘+Down` to fetch directly
* keep translation keys of en_US in order
* add translations for zh_CN and zh_TW
* do NOT using namespace under `SourceGit`
* use `⇧` instead of `Shift` in hotkey tips
* hotkey mismatch on macOS
* hotkeys to start fetch/pull/push directly not work on macOS
* remove the hotkey of `Create Branch` context menu item
   - there are other objects (such as branch and tag) also have the `Create Branch` context menu item without hotkeys
   - on macOS, we already use `⌘+B` to create branch with selected commit, not `Ctrl + B`

Signed-off-by: leo <longshuang@msn.cn>

src/ViewModels/Histories.cs

@@ -4,7 +4,6 @@ using System.Collections.Generic;
 using System.Text;
 
 using Avalonia.Controls;
-using Avalonia.Input;
 using Avalonia.Platform.Storage;
 
 using CommunityToolkit.Mvvm.ComponentModel;
@@ -545,7 +544,6 @@ namespace SourceGit.ViewModels
             var createBranch = new MenuItem();
             createBranch.Icon = App.CreateMenuIcon("Icons.Branch.Add");
             createBranch.Header = App.Text("CreateBranch");
-            createBranch.HotKey = new KeyGesture(Key.B, KeyModifiers.Control);
             createBranch.Click += (_, e) =>
             {
                 if (PopupHost.CanCreatePopup())