Moved test scripts and files from util to test

xml_func.py: Added _namepart function for extracting parts of names

Finished NYBG mapping to VegBank\!

test_map: Added debug option to print VegBank XML instead of importing it into the database

xpath.py: Created is_positive() function

Further refinements to mappings to support database constraints

xpath.py: Added support for negative attribute assertions with !

Changed mappings to use keys vs. attrs

xpath.py: Fixed creation of attrs so it happens even when node already exists

xpath.py: Added concept of keys vs attrs in XPath elem

Started filling in required values for VegBank fields in mappings. Will need to refactor to move these to metadata for the datasources.

Now allow empty rows. Added support for select statement limit.

Added support for quoted values in XPaths

Fixed name XML function. Fixed accept_test_output.

Added support for name XML function. Added error handling for empty rows.

Made it easier to accept test output

Added NYBG stemCount metadata

Added xml_func.py to process mappings whose output needs postprocessing

Changed VegBank mappings to use XML functions (not implemented yet) to calculate averages and ranges

Added support for mapping datasource metadata

Changed for loops to use enumerate() where the index is also needed

Moved XPath prep code (setting ID, value) to xpath.py

xpath.py: Added deepcopy() before setting value of other branches to traverse

NYSpecimenDataAmericas.test.xml: Updated for new NYBG-VegX.organisms.csv

NYBG-VegX.organisms.csv: Changed voucher (primary key) column to be UniqueNYInternalRecordNumber because CatalogNumber contained an empty value