Remove tomodetectors.__info__ from the tomoconfig.__info__

The actual display of tomoconfig displayes far to much information.

As result i think we dont see the important things.

What about rethinking this __info__? For example removing the display if the full tomodetectors.__info__ inside tomoconfig.__info__.

Instead we can provide a summary of the detectors + the active detector

In the same thing, we should reduce the size of tomodetectors.__info__, or reorder it:

• The 2 tables related to the detector list should be merged
• I think we should display a single pixel size, the one selected

For more detail, users can anyway display a specific detector, or we can create dedicated output.

@muzelle what do you think about it. I think it's important to think about it before September.