remove stream properties from gd.data on copyGraph
remove stream properties from gd.data on copyGraph

etpinard/plotly.js,plotly/plotly.js,plotly/plotly.js,plotly/plotly.js,etpinard/plotly.js,plotly/plotly.js,asolagmbh/plotly.js,asolagmbh/plotly.js,asolagmbh/plotly.js,aburato/plotly.js,iongroup/plotly.js,iongroup/plotly.js,etpinard/plotly.js,aburato/plotly.js,iongroup/plotly.js