Examine source code of House Hacker

{
  "name": "House Hacker",
  "description": "House Hacker instant offer analysis",
  "version": "0.7resigned1",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_scripts.js",
        "purify.min.js"
      ]
    }
  ],
  "options_page": "househacker.html",
  "permissions": [
    "tabs",
    "webNavigation",
    "http://localhost/",
    "https://househackerpro-test.com/",
    "https://househackerpro.com/"
  ],
  "web_accessible_resources": [
    "*"
  ],
  "content_security_policy": "script-src 'self'; default-src 'self'",
  "icons": {
    "36": "icon36.png",
    "48": "icon48.png",
    "96": "icon96.png",
    "144": "icon144.png"
  },
  "browser_action": {
    "default_icon": "icon36.png",
    "default_popup": "househacker.html"
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{8f9bcd86-60d4-47a4-827f-e8f664f6ace9}"
    }
  }
}