schemas/vegbien.sql: aggregateoccurrence: Reordered linecover so it's near cover instead of at the end

schemas/vegbien.sql: Moved collectiondate from specimenreplicate to aggregateoccurrence because it's actually the SALVIAS census_date, which is the date the plant was sampled, rather than the DwC eventDate, which is the date the specimen was collected

mappings/DwC2-VegBIEN.specimens.csv: Mapped specimenreplicate via plantobservation for consistency with plots data. (This change is required for VegCSV table merging to work properly.) This is also a more accurate way of representing the data, because a specimen in fact comes from a plant, and it's natural to place the plant-related data (measurements, etc.) in the plantobservation table.

mappings/DwC2-VegBIEN.specimens.csv: Mapped specimenreplicate via plantobservation for consistency with plots data. (This change is required for VegCSV table merging to work properly.) This is also a more accurate way of representing the data, because a specimen in fact comes from a plant, and it's natural to place the plant-related data (measurements, etc.) in the plantobservation table.

mappings/VegX-VegCSV.stems.csv: Remapped stem notes to new stemNotes term, and mapped new organism notes VegX XPath to now-available DwC fieldNotes

inputs/SALVIAS/maps/VegX.organisms.csv: Map organism notes to different place than stem notes, because these are separate fields

mappings/Makefile: VegCSV-VegBIEN.specimens.csv: Temporarily sort by input column rather than output column, to assist in finding terms that map to different places in the DwC- and VegX-VegBIEN mappings

mappings/Makefile: VegCSV-VegBIEN.specimens.csv: Use new all option to union, in order to manually review inputs which appear in both maps but map to different places

union: Added full flag to turn off merging mappings that are in both maps, in order to review inputs which appear in both maps but map to different places

mappings/Makefile: Merged .VegX-VegCSV.stems.csv.last_cleanup into .%.last_cleanup, since VegX-VegCSV.stems.csv now uses the same cleanup operations as the other non-derived maps. Note that this automatically creates a file in for_review for VegX-VegCSV.stems.csv, which is currently identical to it.