Make all OS menus localizable

Turns out that Electron is not localizing the 'role' elements like we
expected would happen.

test/app/fixtures/menu-windows-linux.json

@@ -10,6 +10,7 @@
         "type": "separator"
       },
       {
+        "label": "Quit Signal",
         "role": "quit"
       }
     ]
@@ -18,30 +19,38 @@
     "label": "&Edit",
     "submenu": [
       {
+        "label": "Undo",
         "role": "undo"
       },
       {
+        "label": "Redo",
         "role": "redo"
       },
       {
         "type": "separator"
       },
       {
+        "label": "Cut",
         "role": "cut"
       },
       {
+        "label": "Copy",
         "role": "copy"
       },
       {
+        "label": "Paste",
         "role": "paste"
       },
       {
+        "label": "Paste and Match Style",
         "role": "pasteandmatchstyle"
       },
       {
+        "label": "Delete",
         "role": "delete"
       },
       {
+        "label": "Select All",
         "role": "selectall"
       }
     ]
@@ -50,18 +59,22 @@
     "label": "&View",
     "submenu": [
       {
+        "label": "Actual Size",
         "role": "resetzoom"
       },
       {
+        "label": "Zoom In",
         "role": "zoomin"
       },
       {
+        "label": "Zoom Out",
         "role": "zoomout"
       },
       {
         "type": "separator"
       },
       {
+        "label": "Toggle Full Screen",
         "role": "togglefullscreen"
       },
       {
@@ -75,6 +88,7 @@
         "type": "separator"
       },
       {
+        "label": "Toggle Developer Tools",
         "role": "toggledevtools"
       }
     ]
@@ -84,6 +98,7 @@
     "role": "window",
     "submenu": [
       {
+        "label": "Minimize",
         "role": "minimize"
       }
     ]