Examine source code of FENSE Security

{
  "manifest_version": 2,
  "name": "FENSE Security",
  "description": "A simple extension to easily block distracting websites and urls for Firefox.",
  "author": "TMA Solution",
  "version": "1.0",
  "web_accessible_resources": [
    "data/*.json",
    "scripts/*.js",
    "html/*.html",
    "images/*.png"
  ],
  "browser_action": {
    "default_popup": "html/routingPage.html",
    "default_icon": {
      "16": "images/16.png",
      "32": "images/32.png",
      "48": "images/48.png",
      "64": "images/64.png"
    }
  },
  "icons": {
    "16": "images/16.png",
    "32": "images/32.png",
    "48": "images/48.png",
    "64": "images/64.png",
    "128": "images/128.png"
  },
  "background": {
    "scripts": [
      "scripts/background.js",
      "scripts/config.js",
      "scripts/global.js",
      "scripts/langConfig.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "scripts/content_script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "activeTab",
    "tabs",
    "notifications",
    "<all_urls>"
  ],
  "devtools_page": "html/index.html"
}