NYPL fixes

- Update cleanup_values to remove whitespace after/before
  opening/closing parentheses and add contributor to default fields
- Update mods_to_dpla to properly set NYPL contributor
- Updated poll_profiles to include itemLink field in record for
  NYPL
- Update mods_to_dpla to set isShownAt using itemLink for Lawrence
  collection records,but use a placeholder for Emmet collection
  items
- Update mods_to_dpla to set the title field to the last titleInfo
- Use set_prop to set NYPL sourceResource/rights