am 84acbc81: am e2688b18: am 44c3d51b: am 13d744f2: am 466d8411: am 8d54a6e0: resolved conflicts for merge of b8fb609b to jb-mr1-dev

* commit '84acbc81b50e8d30df668b4ffd763b7c96e172a2':
  Do not allow updates to the _data column.