Merge pull request #31 from chrisprom/master

cleanup collections json
Merge pull request #32 from chrisprom/master

cleanup creators json
Merge pull request #33 from chrisprom/master

restore nesting of parent subjects in JSON
Accession, CollectionContent ,Collection ,DigitalContent
Merge pull request #34 from mindking/master

Update JSON for Accession, CollectionContent ,Collections, DigitalContent