Examine source code of MT Сustomization

{
  "name": "MT Сustomization",
  "version": "0.2.2.4resigned1",
  "description": "Tanki Online Moderation Tools Сustomization",
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "https://moderation-tool.eu.tankionline.com/*"
      ],
      "js": [
        "components/x.min.js",
        "components/download.js",
        "components/clipboard.min.js",
        "components/app.module.js"
      ],
      "css": [
        "components/app.module.css"
      ],
      "all_frames": true,
      "run_at": "document_idle"
    }
  ],
  "applications": {
    "gecko": {
      "id": "java.console.to@gmail.com",
      "strict_min_version": "45.0"
    }
  },
  "browser_action": {
    "icons": {
      "16": "components/favicon.png",
      "38": "components/favicon.png"
    },
    "default_popup": "block.content/popup.html"
  },
  "web_accessible_resources": [
    "components/*"
  ],
  "permissions": [
    "webNavigation"
  ]
}