bugfix: /Makefile: postgres_restart-Darwin: need to have the user run the command outside of make because it doesn't appear to do anything when run inside make (this is the same problem as on Linux)

/Makefile: $(pg_ctl-Darwin): use simpler `brew services` instead of `launchctl __/homebrew.mxcl.postgresql.plist`

bugfix: bin/stop_imports: also need to include `bin/after_import`

inputs/.TNRS/Source/map.csv: datasetURL: updated to indicate that this uses the TNRS dev server (the actual URL is private)

fix: inputs/VASCAN/Source/map.csv: observationGranularity should not be specimen because this datasource contains only taxa

bugfix: bin/import_all: now that always using log files to fix output clutter, need to delete created logs if logging is turned off

bugfix: bin/import_all: don't errexit if a background process is Ctrl-C'd

bugfix: bin/import_all: was run without initial "." test: don't exit nonzero because this will close the subshell

bugfix: bin/import_all: ensure that this is run in a subshell, which is needed so errexits don't close the terminal window

bin/import_all: documented that this must be run in a subshell (obtained by running `$0`)