Add simplification and ingest code to support special flag on Episode.
Merge pull request #272 from atlasapi/mbst-5335-ingest-pa-special-flag

Ingest special flag from PA
Revert "Revert "Merge pull request #265 from atlasapi/mbst-5414-pa-repeat-flag""

This reverts commit ae80cb42fc15b627b0221c4ba33d0edd59977664.
Set ID on parent refs
Merge branch 'set-id-on-parent-refs' into stage