Disable settings button if printer is busy or no control access.
Fix spelling error.
Merge branch 'feature/printerdriver' of github.com:Doodle3D/doodle3d-client into feature/printerdriver

Conflicts:
	js_src/Printer.js
Merge branch 'feature/printerdriver' of github.com:Doodle3D/doodle3d-client into feature/printerdriver