schemas/vegbien.sql: rm_query_group(): support removing all validations as well as just those with a particular group prefix (and renamed to rm_output_queries())

fix: schemas/vegbien.sql: public_validations: schema comment: removed incorrect "" in `SET search_path = "public_validations", pg_catalog;` now that they are no longer auto-added

bugfix: schemas/Makefile: `%/install: vegbien.sql`: don't enclose public_validations in "" because this causes a comment that says to search for `SET search_path = public_validations, pg_catalog;` to become mangled

schemas/vegbien.sql: synced with DB, which reorders ~type tables

fix: schemas/Makefile: moved comment about publishing a schema to %/publish

lib/Firefox_bookmarks.reformat.csv: "page's description": changed to "page's own description" to clarify that this is a description provided by the page itself

web/links/index.htm: updated to Firefox bookmarks: PostgreSQL: added links for error reporting levels and how to hide stack traces in psql. SQL: added links for recursive queries, which can be used to traverse hierarchical (parent-pointer) tables.

fix: inputs/SALVIAS/validations.sql: renamed SiteCode to plot_code to match output queries

schemas/util.sql: raise_error_notice(): raise a WARNING instead because this is for errors, and rename to raise_error_warning() to match

schemas/util.sql: raise_error_notice(): raise a WARNING instead because this is for errors, and rename to raise_error_warning() to match