Add modeBarButtonsToRemove constructor argument

[rwl]

This issue describes how to prevent uploading data to Plotly:

plotly/plotly.js#316

E.g:

Plotly.newPlot(container, data, layout, {modeBarButtonsToRemove: ['sendDataToCloud',
  'autoScale2d', 'resetScale2d'] ,displaylogo: false, showTips:false});