sql_io.py: put_table(): ensure_cond(): When adding the failed condition to the errors table, also include the original, untranslated condition from the DB schema in addition to the translation of the condition into the input schema

sql_io.py: track_data_error(): Fixed bug where errors whose column had no srcs (indicated by () ) were incorrectly being ignored. This affected NOT NULL exceptions where the column was not provided by the dataset.

sql_gen.py: If no cols had srcs, return [] instead of the [()] that itertools.product() would have returned

sql_io.py: track_data_error(): Support errors with no columns by inserting a single entry with column set to NULL

strings.py: Added join()

sql_io.py: mk_errors_table(): Made "column" column nullable, because some errors (such as check constraint violations) don't have any corresponding columns if its columns weren't provided in the input data

inputs/test_taxonomic_names/test_scrub: `make inputs/.TNRS/reinstall`: Use new $schema_only option so that an empty TNRS schema is installed rather than one containing inputs/.TNRS/data.sql

inputs/.TNRS/: Added data.sql containing the test_taxonomic_names TNRS results, so that a new installation of VegBIEN will contain the necessary data to make the tests pass, including the TNRS import test

input.Makefile: Staging tables installation: If $schema_only option is set, only install .sql files ending in schema.sql

inputs/Makefile: $(rsyncLogs): Use $(rsync) instead of $(rsync*) now that it supports excluding just temp files and .svn rather than all .*