Process queries for HexGrid objects.
:param request: HTTP GET request
:return: JSON format of HexGrid (only pk and count) or GeoJSON of the geom of HexGrid.

GET /api/occurrence/grid/?taxon=4341369
HTTP 200 OK
Allow: OPTIONS, GET
Content-Type: application/json
Vary: Accept

{
    "features": [
        {
            "properties": {
                "pk": "442181"
            },
            "type": "Feature",
            "geometry": {
                "coordinates": [
                    [
                        [
                            [
                                -499996.503122553,
                                -5340492.48000924
                            ],
                            [
                                -416663.130935026,
                                -5196154.84541439
                            ],
                            [
                                -249996.386559972,
                                -5196154.84541439
                            ],
                            [
                                -166663.014372444,
                                -5340492.48000924
                            ],
                            [
                                -249996.386559972,
                                -5484830.11460408
                            ],
                            [
                                -416663.130935026,
                                -5484830.11460408
                            ],
                            [
                                -499996.503122553,
                                -5340492.48000924
                            ]
                        ]
                    ]
                ],
                "type": "MultiPolygon"
            }
        },
        {
            "properties": {
                "pk": "442289"
            },
            "type": "Feature",
            "geometry": {
                "coordinates": [
                    [
                        [
                            [
                                3.73000261001289,
                                -5917843.01838861
                            ],
                            [
                                83337.1021901372,
                                -5773505.38379377
                            ],
                            [
                                250003.846565192,
                                -5773505.38379377
                            ],
                            [
                                333337.218752719,
                                -5917843.01838861
                            ],
                            [
                                250003.846565192,
                                -6062180.65298346
                            ],
                            [
                                83337.1021901372,
                                -6062180.65298346
                            ],
                            [
                                3.73000261001289,
                                -5917843.01838861
                            ]
                        ]
                    ]
                ],
                "type": "MultiPolygon"
            }
        },
        {
            "properties": {
                "pk": "442291"
            },
            "type": "Feature",
            "geometry": {
                "coordinates": [
                    [
                        [
                            [
                                3.73000261001289,
                                -5340492.48000924
                            ],
                            [
                                83337.1021901372,
                                -5196154.84541439
                            ],
                            [
                                250003.846565192,
                                -5196154.84541439
                            ],
                            [
                                333337.218752719,
                                -5340492.48000924
                            ],
                            [
                                250003.846565192,
                                -5484830.11460408
                            ],
                            [
                                83337.1021901372,
                                -5484830.11460408
                            ],
                            [
                                3.73000261001289,
                                -5340492.48000924
                            ]
                        ]
                    ]
                ],
                "type": "MultiPolygon"
            }
        },
        {
            "properties": {
                "pk": "442729"
            },
            "type": "Feature",
            "geometry": {
                "coordinates": [
                    [
                        [
                            [
                                2000004.66250326,
                                -5917843.01838861
                            ],
                            [
                                2083338.03469079,
                                -5773505.38379377
                            ],
                            [
                                2250004.77906584,
                                -5773505.38379377
                            ],
                            [
                                2333338.15125337,
                                -5917843.01838861
                            ],
                            [
                                2250004.77906584,
                                -6062180.65298346
                            ],
                            [
                                2083338.03469079,
                                -6062180.65298346
                            ],
                            [
                                2000004.66250326,
                                -5917843.01838861
                            ]
                        ]
                    ]
                ],
                "type": "MultiPolygon"
            }
        }
    ],
    "crs": {
        "type": "name",
        "properties": {
            "name": "EPSG:3031"
        }
    },
    "type": "FeatureCollection"
}