web/links/index.htm: use - instead of --- to separate the page's description from the author comments because it's faster to type and one hyphen is sufficient

lib/Firefox_bookmarks.reformat.csv: labeling page's description: don't match descriptions with a leading blank line as an author comment, because sometimes page descriptions themselves start with a blank line. instead, author comments at the beginning of bookmark descriptions should always start with a " or be preceded by a line containing only hyphens (-). note that it was never reliable to use a blank line for this purpose, because it would be trimmed out upon reimport of the HTML file into Firefox.

web/links/index.htm: updated to Firefox bookmarks

inputs/NVS/*/map.csv: Taxon Growth Form: use new _lowercase() to avoid needing to manually map each value that is already valid but just needs to be lowercased

schemas/util.sql: added _lowercase()

added inputs/CTFS/ERD/ VegPath location

added inputs/MO/_src/_README.TXT with warning that the refresh provided to us is missing several columns from the original extract: CollectionCode, CatalogNumber, IndividualCount

schemas/VegCore/VegCore.ERD.mwb: reduced MaxColumnsDisplayed to 10 to prevent wide tables from taking up too much space in the ERD. this was a big problem in the VegBIEN ERD, which we are hoping to prevent in the VegCore ERD as first-class columns get added to the tables. note that it's very important to ensure that the first-class columns are sorted in importance order, so that the 10 most important are visible in the ERD.

schemas/VegCore/VegCore.ERD.mwb: renamed specimen_holder_institution to specimenholder_institution because specimenholder is one word

lib/sql_io.py: put_table(): Calling wrapper function: adding pkey or index on the resulting table: don't display warning if a pkey can't be added, because this is actually a legitimate situation when the called function is set-returning and can return multiple rows for one input. having this as a warning results in spurious warnings in the automated tests (which look confusingly like ignored errors because Python warnings include debugging context information). e.g. `make inputs/Madidi/IndividualObservation/test.by_col.xml` causes this error in the sourcelist->sourcename splitting step (which of course can produce multiple specimenholder institutions)....