progressguage images
styles and html pertaining to the new Progressbar and Thermometer look and feel
Merge branch 'feature/printerdriver' of https://github.com/Doodle3D/doodle3d-client into feature/printerdriver

# By peteruithoven
# Via peteruithoven
* 'feature/printerdriver' of https://github.com/Doodle3D/doodle3d-client:
  Check gcode generation feasibility check to prevent iPad/iPhone crashes
  Removing confirm
  stop status checks on override and start them again when there is a first response
  reset the status check when printer state is overruled