Examine source code of Apopou Reminder

{
  "name": "Apopou Reminder",
  "version": "1.0.0",
  "manifest_version": 2,
  "browser_action": {
    "default_popup": "index.html",
    "default_icon": {
      "16": "img/favicon.png",
      "48": "img/favicon.png",
      "128": "img/favicon.png"
    }
  },
  "web_accessible_resources": [
    "img/*"
  ],
  "permissions": [
    "storage",
    "activeTab",
    "cookies",
    "tabs",
    "<all_urls>"
  ],
  "optional_permissions": [
    "https://apopou.gr/*"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self';",
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*",
        "https://apopou.gr/"
      ],
      "js": [
        "jquery.js",
        "content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e2b320ae-5514-4cbe-bcde-c19b50518998}"
    }
  }
}