added method exportToFieldBookCSVUsingIBDBv2
added headers to CSV
clean up DataSetExporter
fix the sorting of header in CSV output
GCP-5945 remove empty traits
GCP-5378
GCP-5495
GCP-5378
GCP-5495
Bug fixes

Signed-off-by: Aldrin Batac <aldrin@efficio.us.com>
Merge branch 'master' of https://github.com/digitalabs/IBPWorkbench