[Cin] Aesthetic: Icons for SUV theme

[Igor BEGHETTO]

Thank you Phyllis/GG!
I think it is good now.

>     - The background of the New Project window (at the bottom) don't
>     mix the
>     OK and Cancel buttons (Cin_20200923_c2_NewProject.png).
>
> GG modded suggestion a little and checked in the change.
I saw. I had changed only the background image to see the 4 areas in a 
separate way and no change the buttons.
Anyway, it is good. Thanks!

IgorBeg