Examine source code of 42 intra beautifier

{
  "manifest_version": 2,
  "name": "Remove intra 42 red button",
  "description": "Remove the help-button on the intranet",
  "version": "2.1.0",
  "content_scripts": [
    {
      "matches": [
        "https://*.intra.42.fr/*"
      ],
      "js": [
        "intra.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "link_help.js"
    ]
  },
  "permissions": [
    "tabs",
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "help_button.png",
    "default_title": "help-button"
  }
}