Examine source code of Gestnote Rank Tracker

{
  "manifest_version": 2,
  "name": "Gestnote Rank Tracker",
  "version": "1.0",
  "description": "Affiche le classement de l'étudiant pour chaque note, ainsi qu'un graphique en cliquant sur son classement.",
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "content_scripts": [
    {
      "js": [
        "scripts/plotly-strict.min.js",
        "scripts/gestrank.js"
      ],
      "matches": [
        "https://scolarite.polytech.univ-nantes.fr/*"
      ]
    }
  ],
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "gestnote_rank_tracker@julien.ctr"
    }
  }
}