schemas/public_.sql: added plot.**.modify()

inputs/.TNRS/schema.sql: *_modify(): removed the need to manually maintain copies of the dependent view definitions with the *s in place, because the *s are now added automatically by view_def_to_orig()

inputs/.TNRS/schema.sql: *_modify(): removed the need to manually maintain copies of the dependent view definitions with the *s in place, because the *s are now added automatically by view_def_to_orig()

fix: schemas/util.sql: view_def_to_orig(): also need to merge .* expressions resulting from a SELECT * of a join, to avoid duplicated columns

fix: schemas/util.sql: view_def_to_orig(): require at least 6 cols to avoid false positives in the expansion match pattern

bugfix: schemas/util.sql: view_def_to_orig(): 1st col: can't prepend \y because it considers only \w chars, not "

bugfix: schemas/util.sql: view_def_to_orig(): don't match whitespace in the middle of a "" identifier, as this could throw off the parser

schemas/util.sql: eval(): restore user's intent by running util.view_def_to_orig() on the query to unexpand expanded * expressions

schemas/util.sql: pg_get_viewdef(): use util.view_def_to_orig()

schemas/util.sql: added view_def_to_orig()