bugfix: inputs/input.Makefile: validations.sql must be in a subdir so it won't get run by sql/install

lib/runscripts/validations.pg.sql.run: export_(): make the export idempotent for easier re-runnability

bugfix: inputs/SALVIAS/validations.sql: need to cast character varying to text so that the types of each side of if() match

inputs/SALVIAS/validations.sql: implemented _plots_19_count_of_censuses_per_plot_in_each_project

bugfix: inputs/SALVIAS/validations.sql: plots_07_list_of_plots_with_counts_of_individuals_per_species: renamed to _plots_07_list_of_plots*which_use*_... because this query is not intended to include the actual counts, just to say which plots have them (the correct "which use" wording is also used in queries #8, 9)

schemas/vegbien.sql, inputs/SALVIAS/validations.sql: added _plots_06a_list_of_stems, for use in figuring out the diff in _plots_06_list_of_plots_with_stem_measurements

fix: inputs/SALVIAS/validations.sql: _plots_18_list_of_subplots_codes_for_each_plot_for_each_project: changed columns to match output query

fix: inputs/SALVIAS/validations.sql: _plots_15_pct_cover_of_each_verb_taxon_in_each_plot_in_each_pro: changed types to match output query

bugfix: inputs/SALVIAS/validations.sql: _plots_15_pct_cover_of_each_verb_taxon_in_each_plot_in_each_pro: changed summarizing column from mean_cover->totalpercentcover to match output query

bugfix: inputs/SALVIAS/validations.sql: _plots_10a_aggregate_observation_individual_counts: changed individual_id type to match output query

schemas/vegbien.sql, inputs/SALVIAS/validations.sql: added _plots_10a_aggregate_observation_individual_counts, for use in debugging diffs in _plots_10_count_of_individuals_per_plot_in_each_proj

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

inputs/SALVIAS/validations.sql: use plot_code instead of plotcode for easier readability

fix: inputs/SALVIAS/validations.sql: plotMetadata.SiteCode: need to match types with the output query column

fix: inputs/SALVIAS/validations.sql: _plots_02_list_of_project_names: altered column aliases to match output query

inputs/SALVIAS/validations.sql: added Brad's comments from validation/aggregating/plots/SALVIAS/bien3_validations_salvias_db_original.VegCore.sql

added inputs/SALVIAS/validations*.sql