macOS: add missing Edit menu roles

src/main/menu.js

@@ -106,6 +106,15 @@ function getMenuTemplate () {
     {
       label: 'Edit',
       submenu: [
+        {
+          role: 'undo'
+        },
+        {
+          role: 'redo'
+        },
+        {
+          type: 'separator'
+        },
         {
           role: 'cut'
         },
@@ -116,6 +125,9 @@ function getMenuTemplate () {
           label: 'Paste Torrent Address',
           role: 'paste'
         },
+        {
+          role: 'delete'
+        },
         {
           role: 'selectall'
         },