KScreen can not be operated by keyboard alone.

Sometimes you need configure screen resolution without a pointing device. it would be nice to be able to iterate over the elements with tab and manipulate them like you would with the other screen setting kcm.

Reproducible: Always

Steps to Reproduce:
1.open the kcm
2.click tab to cycle between widgets
Actual Results:  
focus moves to the kcm where you can only pan around with the arrows and nothing else.
the next tab goes back to the kcm selector

Expected Results:  
the focuse should next shift to the first screen, where you can reposition it useing the arows,
the next focus shift should be to the first screen's subwidgets that you could activate via a keypress (space/enter),
the next focus shift should be t the next screen, or the apply button.