Examine source code of Recruitr for Firefox

{
  "manifest_version": 2,
  "name": "Recruitr for Quantum",
  "version": "4.6",
  "description": "Streamlines the process of recruiting new rulers in Cyber Nations",
  "applications": {
    "gecko": {
      "id": "@recruitr-firefox"
    }
  },
  "page_action": {
    "default_icon": "icon-64.png",
    "default_title": "Recruitr by sffc1"
  },
  "permissions": [
    "tabs",
    "storage",
    "*://www.cybernations.net/*"
  ],
  "background": {
    "scripts": [
      "index.js",
      "background.js",
      "sha256.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'"
}