bugfix: inputs/GBIF/raw_occurrence_record_plants/run: table/make(): added make of prerequisites

bugfix: inputs/GBIF/raw_occurrence_record_plants/run: table/make(): don't reset $table to plant_fraction_for_herbaria_filter for commands that use $table

inputs/GBIF/raw_occurrence_record_plants/run: added table/make(), which makes the filter view

inputs/GBIF/raw_occurrence_record/: renamed to raw_occurrence_record_plants because it's actually only the plants in raw_occurrence_record, not all of raw_occurrence_record. also, this will allow us to create a separate raw_occurrence_record_plants view whose name matches the folder and does not collide with the raw_occurrence_record table.

inputs/GBIF/raw_occurrence_record/run: herbaria_filter/make(): added runtime, which is ~0 since it just needs to do CSV import and index scans

inputs/GBIF/raw_occurrence_record/run: herbaria_filter/make(): time the population of herbaria_filter

inputs/GBIF/raw_occurrence_record/run: plant_fraction/make(): updated runtime. added rows affected count to runtime so if the number of rows it's related to (in this case, institution_code) changes, the runtime can be expected to change accordingly.

inputs/.TNRS/schema.sql: tnrs_populate_fields(): documented runtime (17 min)

bugfix: inputs/GBIF/raw_occurrence_record/run: plant_fraction/make(): plant_fraction column: COUNT counts non-NULL rather than true values (which counter-intuitively includes false, because it's non-NULL), so need to add NULLIF around the boolean expression to turn it into a NULL-or-not expression. see http://vegpath.org/wiki/2013-06-06_conference_call#GBIF-subsetting-fix-plant_fraction-SQL-bug .

inputs/.TNRS/schema.sql: tnrs_populate_fields(): documented that when changing this function, you must regenerate the derived cols using `UPDATE tnrs SET "Name_submitted" = "Name_submitted"`