Unnamed routes and tracks all fell back to the same generic 'GPX Route' /
'GPX Track' label, so the name-based import dedup dropped every one after
the first - importing several files (or one file with several tracks) only
kept a single place. Derive the default name from the source filename with
an index suffix when a file holds more than one geometry, thread the
filename down through the controller, and let the import modal take more
than one file at a time. Adds PLACE-SVC-037/038.
Maurice
39113e12de