inputs/.geoscrub/geoscrub_output/run: load_data(): updated runtime (4 min)

planning/timeline/timeline.2013.xls: updated for progress

bugfix: inputs/.geoscrub/geoscrub_output/geoscrub.csv.run: invoking derived/biengeo/geoscrub.sh: need to split the input file into separate dir and filename parts, because $DATAFILE actually is just the filename, not the entire path, and will otherwise get prepended with the default value for $DATADIR

inputs/.geoscrub/geoscrub_output/geoscrub.csv.run: also run geoscrub.sh. added export_() target to run just the export of the result table separately.

derived/biengeo/load-geoscrub-input.sh: allow the caller to override $DATAFILE in the environment, to use a file named other than "geoscrub-corpus.csv"

/run: use new exports/geoscrub_input.csv.run

added exports/geoscrub_input.csv.run

bugfix: lib/sh/make.sh: $remake: need to explicitly propagate this to invoked commands if it was set from $rm

derived/biengeo/load-geoscrub-input.sh: updated $DATA_URL for new input filename

/run geoscrub_input/make(): include a header on the CSV file, so that the column names don't risk getting spliced from the data (and to shorten the CSV filename, which had to contain the column names instead). this requires changing the geoscrubbing scripts to accept a CSV header.