schemas/vegbien.sql: taxonscope: descriptive comment: Added period for consistency with other descriptive table comments

schemas/vegbien.sql: taxon: Added descriptive comment for data dictionary

schemas/vegbien.sql: VegBank-equivalent tables comments: Prepended "Equivalent to" before VegBank, so the equivalent tables statement can fit grammatically after a description of the table instead of having to be the first phrase in the descriptive table comment

schemas/vegbien.sql: taxon: VegBank-equivalent tables comment: Added plantName and applicable columns from plantStatus, which are also part of the taxon table

schemas/vegbien.sql: placepath: Added otherranks field, analogous to taxonpath.otherranks

schemas/vegbien.sql: taxonpath: Added descriptive comment for data dictionary

inputs/import.stats.xls: Updated import times

inputs/UNCC/Specimen/map.csv: accession: Documented that it's globally unique, although occasionally duplicated

inputs/REMIB/Specimen/map.csv: Remapped accession_number to catalogNumber because it is not globally unique, only (usually) unique within the institution providing the data ("acronym"). Note that there are nevertheless 11,869 rows where an accession_number appears multiple times within the same institution.

mappings/VegCore-VegBIEN.csv: Only use institutionCode+collectionCode+catalogNumber as the authorlocationcode (location-scoping ID) if there is actually a catalogNumber. Otherwise, the mapping process would attempt to create one location for each collection in the datasource, when there should be one location for each specimen.