Examine source code of Daily Idiom Quest

{
  "manifest_version": 2,
  "name": "Daily Idiom Quest",
  "version": "1.0",
  "description": "Master common English idioms and phrases through quick, interactive daily pop-up quizzes.",
  "icons": {
    "48": "idiom_quest_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Daily Idiom Quest"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{bb28cfa7-cb85-4f0b-ad61-171b00016941}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}