Examine source code of LGeL Repair

{
  "manifest_version": 2,
  "name": "LGeL Repair",
  "version": "1.3",
  "description": "Modification de l'affichage du jeu entre l'ancienne et la nouvelle version et réparation des images disparues au fil du temps.",
  "author": "Shüra",
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.loups-garous-en-ligne.com/*"
      ],
      "css": [
        "lgelrepair.css"
      ]
    }
  ],
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "16": "/Icons_V1/LGeL_Repair_16px.png",
      "32": "/Icons_V1/LGeL_Repair_32px.png"
    },
    "default_title": "LGeL Repair"
  },
  "icons": {
    "48": "/Icons_V1/LGeL_Repair_48px.png",
    "96": "/Icons_V1/LGeL_Repair_96px.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{41170028-7624-4275-b7a4-03439432a002}"
    }
  }
}