made the 'ok' button have a mouseover 'hand' cursor
gcode generated twist now complies with the doodle preview
Merge branch 'master' of https://github.com/Doodle3D/doodle3d-client

# By peteruithoven
# Via peteruithoven
* 'master' of https://github.com/Doodle3D/doodle3d-client:
  commented out call to missing setPrintprogress()
  removed wrong unit in settings
  Removed unused draw logic