Examine source code of Podio Super Menu

{
  "manifest_version": 2,
  "author": "Globi Web Solutions",
  "name": "Podio Super Menu",
  "description": "Adds lots of useful stuff to Citrix Podio",
  "version": "3.1.17",
  "icons": {
    "16": "psm_icon_16.png",
    "48": "psm_icon_48.png",
    "128": "psm_icon_128.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "https://podio.com/",
    "https://www.bettersupermenu.com/"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://podio.com/*"
      ],
      "js": [
        "jquery.min.js",
        "utility.js",
        "sajax.js",
        "menu.js",
        "notifier.js",
        "markdown.js",
        "sidebar.js",
        "sqlview.js",
        "podio.js",
        "content.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    "menu.html",
    "tealfix.html"
  ],
  "background": {
    "scripts": [
      "jquery.min.js",
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_icon": "psm_icon_48.png",
    "default_popup": "options.html"
  }
}