message: Add hasSelectAll and hasNone properties into checkbox matrix column
diff: @@ -122,6 +122,8 @@ export var matrixDropdownColumnTypes = {
  "choicesByUrl",
  "otherText",
  "choicesVisibleIf",
  + "hasSelectAll",
  + "hasNone",
  ],
  onCellQuestionUpdate: (
  cellQuestion: any,
  