Plot-data

Add
- Webpack config for local dev build

Changed
- npm run build : used by drone to compile webpack bundle
- npm run dev : for local dev use and used by drone to feed cdn

Removed
- Drone develop step

Add
- Add force update to plot_canvas options

Changed
- Update get_current_link to point to right locations

Changed
- Remove intempestive ScatterPlot alert
- Use webpack to split and bundle