bin/import_all: delete_logs(): documented that `trap EXIT` doesn't run until shell exit

bin/import_all: delete_logs(): print when this happens, so it can be verified that it's happening properly

bugfix: bin/import_all: need to run delete_logs manually because `trap EXIT` doesn't run until bg cmds done

bin/import_all: delete_logs: moved testing of whether to delete logs to delete_logs() so that delete_logs() can be run regardless of the $delete_logs setting

bugfix: bin/import_all: delete_logs(): also need to match log filenames when n=""

bugfix: bin/with_all: isset(): need to use `>&- 2>&-` because &> does not work with - as the dest

fix: bin/with_all: removed debug statements

bugfix: bin/with_all: testing if @inputs is set: `"${inputs+isset}"` syntax doesn't work for empty arrays, so need to use `declare -p` instead

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

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