Gmail Date Time Formatter

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Gmail Date Time Formatter",
  "description": "Set the format of the date and time for mails in your inbox as you want",
  "version": "1.21",
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icon16.png",
      "32": "icon32.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "options_page": "options.html",
  "short_name": "Gmail Date Time Formatter",
  "content_scripts": [
    {
      "all_frames": false,
      "matches": [
        "https://mail.google.com/*"
      ],
      "js": [
        "js/jquery-3.3.1.min.js",
        "js/mutation-summary.min.js",
        "js/moment-with-locales.js",
        "js/myscripts.js"
      ],
      "run_at": "document_idle"
    }
  ]
}