Auto-center accessions map

Center accessions map to center of the accessions selected. After choosing "View map" the user is taken to a map centered in the Norwegian sea, and the user needs to manually scroll to the locality of interest.

Example: https://www.genesys-pgr.org/explore/map?filter=%7B%22orgCty.iso3%22%3A%5B%22MAR%22%5D%7D

The following would improve user experience:

• When filters are applied on the map, make a call to the server (passing the jsonFilters) to obtain the "bounding box" for the selection
• Bounding box is obtained by querying for select min(latitude), max(latitude), min(longitude), max(longitude) from accession.... with specified filters
• Apply bounding box to the leaflet map when updating the map layer URL with new filter

Example of centering the leaflet map is in /jsp/country/details.jsp where we focus the map on the institutes.