This MR integrates the advanced options under `Configure...` in the main page,...

This MR integrates the advanced options under `Configure...` in the main page, so the options are more discoverable and compact:
- Profile selection
- Output test of the different channels
- Two pulse-audio settings (virtual output and switch-on-connect)

A new list has been added to show inactive cards (those which profiles are set to 'off'), since they do not present any device and would be otherwise unreachable.