Examine source code of Studie++

{
  "name": "Studie++",
  "description": "description",
  "version": "1.0",
  "manifest_version": 3,
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArKCMLfcsYZRCXOwTixAg+qi6iTRf9EdVixTdtvDylIXPZQpCSfl9OZnSHIh5s8RzaVlELwsfAorxq2XHKI8UWCK8tW9fJKT4Z/x9gFjE/iNEDSaA2DW9g2jo9R0s3zuhgyO3bNZnwO5hBlZhLQS52uoFdtpKU5O6l19a1B1DYk6JLg30PdtqeKOso81+nDTZ8hYQi05YxwHaZSSTiZt+nYPlYHZ8LC/0Ly3XxTu7wqOQ75HS9CdeIADYgLm688X/b1yVIPDUFebUvdlYtQTnDOLpsIM9ZTlftzxhmqWYzqLT0jDajLgu3pvbxXBe3uPRYRbJnmQGqFz1XqS4JJ25kQIDAQAB",
  "browser_specific_settings": {
    "gecko": {
      "id": "studiepp@bugge.com",
      "strict_min_version": "42.0"
    }
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "32": "icon.png"
    }
  },
  "externally_connectable": {
    "matches": [
      "https://all.uddataplus.dk/*"
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "logo.svg",
        "data/birthdays.json",
        "data/themes.json",
        "fonts/fa-solid-900.woff2",
        "fonts/fa-brands-400.woff2",
        "fonts/fa-solid-900.ttf",
        "fonts/fa-brands-400.ttf",
        "content/elevator.mp3",
        "images/mario.jpg"
      ],
      "matches": [
        "https://all.uddataplus.dk/*"
      ]
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "https://all.uddataplus.dk/*"
      ],
      "css": [
        "content/css/content.css",
        "fonts/fontawesome.css",
        "fonts/brands.css",
        "fonts/solid.css"
      ],
      "js": [
        "content/js/content.js",
        "jquery.min.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://all.uddataplus.dk/?id=id_menu_start",
        "https://all.uddataplus.dk/"
      ],
      "css": [
        "content/css/start.css"
      ],
      "js": [
        "content/js/start.js"
      ],
      "run_at": "document_start"
    },
    {
      "world": "MAIN",
      "matches": [
        "https://all.uddataplus.dk/opgave/?id=id_menu_opgaver"
      ],
      "js": [
        "content/js/paste.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "https://all.uddataplus.dk/opgave/?id=id_menu_opgaver"
      ],
      "js": [
        "content/js/assignments.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "https://all.uddataplus.dk/besked/?id=id_menu_samtaler"
      ],
      "js": [
        "content/js/conversations.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "https://all.uddataplus.dk/skema/?id=id_menu_skema"
      ],
      "js": [
        "content/js/schedule.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "https://all.uddataplus.dk/elever/?id=id_menu_om_mig"
      ],
      "js": [
        "content/js/about.js"
      ],
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "storage",
    "clipboardRead"
  ]
}