very minor editing (basically trying to see if I could improve minification, don't think it helped)
fixes issue https://github.com/Doodle3D/doodle3d-client/issues/13
when undoing, the preview recalculates its viewsize (ie keeping it maximized on the preview)
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:
  Sending endcode with API:printer/stop. Refactored start- and endcode generation
  Seperate CGI-bin signin request
  Open Settings window after settings are loaded