Examine source code of Gladiatus Time Saver

{
  "name": "Gladiatus Time Saver",
  "short_name": "GTS",
  "version": "2.0.1.6",
  "description": "Save your time on playing gladiatus!",
  "author": "Khanh Nguyen",
  "icons": {
    "16": "icons/icon_16.png",
    "48": "icons/icon_48.png",
    "128": "icons/icon_128.png"
  },
  "background": {
    "persistent": false,
    "scripts": [
      "core/background.js"
    ]
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://lobby.gladiatus.gameforge.com/*",
        "http://*.gladiatus.gameforge.com/game/index.php*",
        "https://*.gladiatus.gameforge.com/game/index.php*"
      ],
      "js": [
        "core/info.js",
        "core/manager.js",
        "core/inject.js",
        "init.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "externally_connectable": {
    "matches": [
      "http://*.gladiatus.gameforge.com/game/index.php*",
      "https://*.gladiatus.gameforge.com/game/index.php*"
    ]
  },
  "web_accessible_resources": [
    "core/resources/*",
    "core/source/*",
    "core/locale/*"
  ],
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{e0a905db-294f-4e91-be75-8b5c7c5df90a}"
    }
  }
}