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/?type=occurrence&taxon=9197
HTTP 200 OK
Allow: OPTIONS, GET
Content-Type: application/json
Vary: Accept

{
    "features": [
        {
            "properties": {
                "pk": "440887"
            },
            "type": "Feature",
            "geometry": {
                "coordinates": [
                    [
                        [
                            [
                                -6499999.30062451,
                                2165064.51892266
                            ],
                            [
                                -6416665.92843698,
                                2309402.15351751
                            ],
                            [
                                -6249999.18406193,
                                2309402.15351751
                            ],
                            [
                                -6166665.8118744,
                                2165064.51892266
                            ],
                            [
                                -6249999.18406193,
                                2020726.88432782
                            ],
                            [
                                -6416665.92843698,
                                2020726.88432782
                            ],
                            [
                                -6499999.30062451,
                                2165064.51892266
                            ]
                        ]
                    ]
                ],
                "type": "MultiPolygon"
            }
        },
        {
            "properties": {
                "pk": "440940"
            },
            "type": "Feature",
            "geometry": {
                "coordinates": [
                    [
                        [
                            [
                                -6249999.18406193,
                                1732051.61513813
                            ],
                            [
                                -6166665.8118744,
                                1876389.24973297
                            ],
                            [
                                -5999999.06749935,
                                1876389.24973297
                            ],
                            [
                                -5916665.69531182,
                                1732051.61513813
                            ],
                            [
                                -5999999.06749935,
                                1587713.98054329
                            ],
                            [
                                -6166665.8118744,
                                1587713.98054329
                            ],
                            [
                                -6249999.18406193,
                                1732051.61513813
                            ]
                        ]
                    ]
                ],
                "type": "MultiPolygon"
            }
        },
        {
            "properties": {
                "pk": "441488"
            },
            "type": "Feature",
            "geometry": {
                "coordinates": [
                    [
                        [
                            [
                                -3749998.01843611,
                                1154701.07675875
                            ],
                            [
                                -3666664.64624859,
                                1299038.7113536
                            ],
                            [
                                -3499997.90187353,
                                1299038.7113536
                            ],
                            [
                                -3416664.529686,
                                1154701.07675875
                            ],
                            [
                                -3499997.90187353,
                                1010363.44216391
                            ],
                            [
                                -3666664.64624859,
                                1010363.44216391
                            ],
                            [
                                -3749998.01843611,
                                1154701.07675875
                            ]
                        ]
                    ]
                ],
                "type": "MultiPolygon"
            }
        },
        {
            "properties": {
                "pk": "442397"
            },
            "type": "Feature",
            "geometry": {
                "coordinates": [
                    [
                        [
                            [
                                500003.963127773,
                                -6495193.55676799
                            ],
                            [
                                583337.3353153,
                                -6350855.92217315
                            ],
                            [
                                750004.079690354,
                                -6350855.92217315
                            ],
                            [
                                833337.451877881,
                                -6495193.55676799
                            ],
                            [
                                750004.079690354,
                                -6639531.19136284
                            ],
                            [
                                583337.3353153,
                                -6639531.19136284
                            ],
                            [
                                500003.963127773,
                                -6495193.55676799
                            ]
                        ]
                    ]
                ],
                "type": "MultiPolygon"
            }
        },
        {
            "properties": {
                "pk": "442452"
            },
            "type": "Feature",
            "geometry": {
                "coordinates": [
                    [
                        [
                            [
                                750004.079690354,
                                -6350855.92217315
                            ],
                            [
                                833337.451877881,
                                -6206518.2875783
                            ],
                            [
                                1000004.19625294,
                                -6206518.2875783
                            ],
                            [
                                1083337.56844046,
                                -6350855.92217315
                            ],
                            [
                                1000004.19625294,
                                -6495193.55676799
                            ],
                            [
                                833337.451877881,
                                -6495193.55676799
                            ],
                            [
                                750004.079690354,
                                -6350855.92217315
                            ]
                        ]
                    ]
                ],
                "type": "MultiPolygon"
            }
        }
    ],
    "crs": {
        "type": "name",
        "properties": {
            "name": "EPSG:3031"
        }
    },
    "type": "FeatureCollection"
}