Merge pull request #102 from atlasapi/mbst-3937-pa-biogs

Changes for ingest of PA Biogs
Merge pull request #103 from atlasapi/mbst-4829-scraperwiki-post

Added ScraperWiki as publisher/source
add id field to ChildRef
encode id into content identifier
add optional long id to parent ref
Merge branch 'mbst-4003-id-childRefs' into stage
fix json factory