{
  "manifest_version": 2,

  "name": "__MSG_appName__",
  "short_name": "CaretTab",
  "description": "__MSG_appDesc__",
  "version": "3.0.1",
  "default_locale": "en",

  "icons": { "16": "assets/img/icon16.png",
             "48": "assets/img/icon48.png",
            "128": "assets/img/icon128.png" },

  "chrome_url_overrides" : {
    "newtab": "index.html"
  },

  "background": {
    "scripts": ["js/update.js"]
  },

  "permissions": [
    "storage",
    "bookmarks",
    "chrome://favicon/",
    "topSites"
  ],

  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",

  "applications": {
    "gecko": {
      "id": "{1ab49626-2e16-405b-ad65-dcaab8decd7b}",
      "strict_min_version": "57.0"
    }
  }

}

{
  "manifest_version": 2,

  "name": "__MSG_appName__",
  "short_name": "CaretTab",
  "description": "__MSG_appDesc__",
  "version": "3.0.1",
  "default_locale": "en",

  "icons": { "16": "assets/img/icon16.png",
             "48": "assets/img/icon48.png",
            "128": "assets/img/icon128.png" },

  "chrome_url_overrides" : {
    "newtab": "index.html"
  },

  "chrome_settings_overrides" : {
    "homepage": "index.html"
  },

  "background": {
    "scripts": ["js/update.js"]
  },

  "permissions": [
    "storage",
    "bookmarks",
    "chrome://favicon/",
    "topSites"
  ],

  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",

  "applications": {
    "gecko": {
      "id": "{1ab49626-2e16-405b-ad65-dcaab8decd7b}",
      "strict_min_version": "57.0"
    }
  }

}

Replace firefox homepage as well
Replace firefox homepage as well
