Directory initial creation and json api

## Basics

* Category name (up to 60 characters)
* Link to sub-category, one to many
* Sub-categories have a name (up to 60 characters) and 1-3 parts description
* The three parts are up to 125 characters in length

## API

There needs to be only one endpoint

**GET /api/directory/**

    {
    "directory": {
        "category one": {
            "sub category one": {
                "description_1": "first part of contact details",
                "description_2": "second part of contact details",
                "description_3": "third part of contact details"          
            },
            "sub category two": {
                "description_1": "first part of contact details",
                "description_2": "second part of contact details",
                "description_3": "third part of contact details"          
            }
        },
        "category two": {
            "sub category one": {
                "description_1": "first part of contact details",
                "description_2": "second part of contact details",
                "description_3": "third part of contact details"          
            },
            "sub category two": {
                "description_1": "first part of contact details",
                "description_2": "second part of contact details with none extra"        
            }
        }
    }
    }