Examine source code of SDSEN

{
  "manifest_version": 2,
  "name": "SDSEN",
  "version": "1.0.0",
  "description": "SiDeS ENhancer - Un meilleur SIDES",
  "icons": {
    "128": "icon_128.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "SDSEN"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "https://side-sante.fr/learning/bank/index",
    "tabs",
    "storage"
  ],
  "web_accessible_resources": [
    "better_form/newform.html",
    "better_form/newform.css",
    "better_form/newform.js",
    "better_form/fontello/css/fontello.css",
    "better_form/fontello/font/fontello.eot",
    "better_form/fontello/font/fontello.svg",
    "better_form/fontello/font/fontello.ttf",
    "better_form/fontello/font/fontello.woff",
    "better_form/fontello/font/fontello.woff2",
    "item_help/inject.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "mozillaplugin@sdsen.fr",
      "strict_min_version": "53.0"
    }
  }
}