Merge branch 'bugfix/containment-no-id' into 'develop'
authorrinpatch <rinpatch@sdf.org>
Fri, 8 Nov 2019 21:12:23 +0000 (21:12 +0000)
committerrinpatch <rinpatch@sdf.org>
Fri, 8 Nov 2019 21:12:23 +0000 (21:12 +0000)
object containment: handle all cases where ID is invalid (missing, nil, non-string)

Closes #1387

See merge request pleroma/pleroma!1955


Trivial merge