Update map display to include multiple attributes per map marker, extracted from 'attributes' property of taxa nodes.  Added slick grid instance to display the entries highlighted on the map.
Added Slick grid to the display when map markers are created.  The table is displayed below the map and the tree.  In this version, entries are added to the table to match the map.  Plans for the future include automatically rolling up the table using something like a "table group by" operation.