Rework "Stepwise collecting event parser - Latitude/Longitude"

[tmcelrath]

Feature or enhancement

Update User Interface - add "grouper" functionality - fix bugs in selection, check to make sure it still works.

Location

https://sfg.taxonworks.org/tasks/collecting_events/parse/stepwise/lat_long/index

Screenshot, napkin sketch of interface, or conceptual description

No response

Your role

Collection manager

[tmcelrath]

Related: #1782