Implement an ability to store GeoJSON data as a page on Commons. The data will be stored as JSON content in the following structure:

{
  "license": "CC0-1.0",
  "info": { "en": "description in English", ...  },
  "data": {
    // raw GeoJSON data
  }
}

The data will be stored on Commons as Data:Page Title.map (data namespace, with a mandatory .map "extension").

Localization support:

• page description may have an "info" top level key-value object, with the key being a valid language code.
• All "properties" elements may contain title and description fields. Those fields may either be strings or key-value objects.

Kartographer (<mapframe> and <maplink> elements) will be able to access this data using "ExternalData" elements. The standalone GeoJSON pages will not support "ExternalData" that points to other GeoJSON pages.