do not serialize survey property in itemvalue, https://github.com/surveyjs/surveyjs/issues/1079
do not serialize survey property in itemvalue, https://github.com/surveyjs/surveyjs/issues/1079

dmitrykurmanov/surveyjs,surveyjs/surveyjs,andrewtelnov/surveyjs,andrewtelnov/surveyjs,dmitrykurmanov/surveyjs,andrewtelnov/surveyjs,dmitrykurmanov/surveyjs,surveyjs/surveyjs,surveyjs/surveyjs,dmitrykurmanov/surveyjs,surveyjs/surveyjs