Increase pagination limit to 500

This means less requests are made to the server as we will pull 500 geo location points at a time rather than 100.

src/views/organisations/dataset-overview.html

@@ -186,7 +186,7 @@ <h2 class="govuk-heading-m">Dataset details</h2>
     <script>
       window.serverContext = {
         containerId: 'map',
-        geoJsonUrl: "https://www.planning.data.gov.uk/entity.geojson?dataset={{ dataset.dataset }}&geometry_curie=statistical-geography:{{ organisation.statistical_geography }}&limit=100",
+        geoJsonUrl: "https://www.planning.data.gov.uk/entity.geojson?dataset={{ dataset.dataset }}&geometry_curie=statistical-geography:{{ organisation.statistical_geography }}&limit=500",
         boundaryGeoJsonUrl: "https://www.planning.data.gov.uk/entity.geojson?dataset=local-planning-authority&geometry_curie=statistical-geography:{{ organisation.statistical_geography }}"
       }
     </script>