8cc723e4cd03f0ac3da67baf5b3f98ec7f498749

Labels are completely uniquely identified by name; IDs were only left so ID or label name would be recognized in PatchSetApproval's categoryId to facilitate online data migration. By this commit, migration must have finished. Change-Id: I761cd39cf02fe8c63f246dd588500d53a4acc3b0
Description
RETIRED, Gerrit as used by OpenStack