Examine source code of Site Annonce

{
  "applications": {
    "gecko": {
      "id": "extension@classified-media.com"
    }
  },
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "default_locale": "fr",
  "description": "__MSG_appDesc__",
  "icons": {
    "48": "images/ic48.png",
    "96": "images/ic96.png",
    "128": "images/ic128.png"
  },
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "permissions": [],
  "version": "1.0.0.5"
}