Add document references, and corresponding jest test.
Add untracked file to last commit.
Merging in master
Merging in master.
Merging in master.
Merging in master.
Merge remote-tracking branch 'origin/master' into 1593-docref
Merge branch 'master' into 1593-docref
Merge pull request #396 from ENCODE-DCC/1593-docref

1593 Display list of document references in document panels