Skeleton of the configuration GUI

There it is:

It’s kind of primitive, but it’s a first step!

Brief description:

• The menu bar has a File menu (buttons: new, open, save, save as, quit), a Controller Menu (radio buttons: 1 … 7), and a Configuration Menu (radio buttons: 1 … 4).
• The main window is composed of 3 parts: Configuration trigger, Button configuration and Axis configuration.

Each controller (up to 7) has up to 4 configurations.