schemas/vegbien.ERD.mwb: Added analytical_stem, analytical_aggregate to ERD

schemas/vegbien.sql: analytical_*: Added georeferenceValid, distanceToCountry_km, distanceToStateProvince_km

schemas/vegbien.sql: Added _m_to_km()

inputs/.geoscrub/geoscrub_cleaned_unique/map.csv: Removed geoscrubID->locationID mapping because it allowed multiple occurrences of the same placename/coordinates combination, which was causing problems when datasources try to link up to the geoscrub places (and end up matching multiple output rows for each input row)

sql_io.py: put_table(): Removed assertion that into's row count be at least full_in_table's row count, because now that DISTINCT ON is used to satisfy the into table pkey, this is no longer necessarily true

schemas/vegbien.sql: method: method_unique: Added reference_id to make method unique within the datasource instead of globally unique within VegBIEN

mappings/VegCore.csv: Added samplingProtocolID

mappings/VegCore-VegBIEN.csv: subplot locationevent: Only populate parent locationevent's location unique IDs if a subplot #/subplotID is actually specified. (The lack of a location unique ID will cause the parent locationevent's location to be removed, as well as the parent locationevent itself if there is no parent locationevent unique ID.) This fixes a bug where top-level plots in datasources that provide a nullable subplot #/subplotID were incorrectly getting connected to parent locationevents.

mappings/verify.plots.sql: Added # locations, # location events, which also include subplots

inputs/SALVIAS/verify/plots.ref.sql: Standardized line wrapping to put ; on its own line in multi-line queries and at the end of the line in one-line queries