Adding three-dimensional options

Change order in form :
"Chart dimension" just before "Dimensions"

I have done the modification and update block plugin to be ok with Google 3D option.

For Highcharts, maybe later, there are more options for 3D configuration and it's depending chart's type :
3D Pie :

options3d: {
  enabled: true,
  alpha: 45,
  beta: 0
}

3D Column :

options3d: {
  enabled: true,
  alpha: 15,
  beta: 15,
  viewDistance: 25,
  depth: 40
}

adding chart block example