Examine source code of Neo Diggler

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "version": "2.1.2resigned1",
  "description": "__MSG_extensionDescription__",
  "author": "Neil Bird",
  "homepage_url": "https://addons.mozilla.org/en-GB/firefox/addon/neo-diggler/",
  "default_locale": "en_US",
  "applications": {
    "gecko": {
      "id": "{9b84cce7-a817-45d7-865e-9e6e8da1c388}",
      "strict_min_version": "57.0"
    }
  },
  "icons": {
    "48": "icons/neo-diggler.svg"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "browser_style": true,
    "page": "preferences.html",
    "open_in_tab": true
  },
  "permissions": [
    "activeTab",
    "clipboardWrite",
    "menus",
    "storage",
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/neo-diggler.svg",
    "default_title": "__MSG_digglerButton__",
    "default_popup": "popup.html",
    "browser_style": false
  },
  "page_action": {
    "default_icon": "icons/neo-diggler-reverse.svg",
    "default_title": "__MSG_digglerButton__",
    "default_popup": "popup.html",
    "browser_style": false
  }
}