message: Hide selectAllText property for checkbox question if hasSelectAll is false
diff: @@ -429,7 +429,14 @@ Serializer.addClass(
  [
  "hasSelectAll:boolean",
  { name: "maxSelectedChoices:number", default: 0 },
  - { name: "selectAllText", serializationProperty: "locSelectAllText" },
  + {
  + name: "selectAllText",
  + serializationProperty: "locSelectAllText",
  + dependsOn: "hasSelectAll",
  + visibleIf: function(obj: any) {
  + return obj.hasSelectAll;
  + }
  + }
  ],
  function() {
  return new QuestionCheckboxModel("");
  