Changes to RCSB Output from PDB Connector/SMILES Query/Describe Heterogens and PDB Downloader nodes

More changes from the RCSB webservices overnight (11-12 July 2017):

Many values which were previously all uppercase are now in titlecase or lowercase.

Changes in the mmCif output returned which likely relates to https://www.rcsb.org/pdb/news.do?year=2017&article=5963997661fd3d50915a4af7

Nodes all still work OK, but beware of downstream consequences in how you are handling data!

Steve