Documentation update

Phew! We have now updated the online help to reflect all new features and functions in the new version. If you find any errors or anything that is missing, please let us know and we will fix it as soon as we can. We want the online-help to be as complete and correct as possible. Next step will be to look over the tutorials at The CNC Academy so that they also we be up-to-date with the latest version. Thanks to all for your valuable feedback and for supporting our project!