API for driving dataCube interactive visualisations.

Methods
=======
Dataset model
api/<dataset>

Dimension model
api/<dataset>/dimensions/<dimension>

Aggregate measure data
api/<dataset>/dimensions/<dimension>/query

Query (only cut currently supported)
api/<dataset>/dimensions/<dimension>/query?<query>

Example Parameters
------------------
<dataset> = "mortality"
<dimension> = "area"
<query> = "gender=F"


Dataset Model
=============
{
    'id': 'mortality',
    'dimensions': [
        {
            'id': 'gender',
            'type': 'bar',
            'model': '/api/mortality/dimensions/gender',
            'cut': '/api/mortality/dimensions/gender/query',
        },
        {
            'id': 'disease',
            'type': 'bar',
            'model': '/api/mortality/dimensions/disease',
            'cut': '/api/mortality/dimensions/disease/query',
        },
        {
            'id': 'area',
            'type': 'geo',
            'model': '/api/mortality/dimensions/area',
            'cut': '/api/mortality/dimensions/area/query',
        }
    ]
}