Right overflow on paint validator

[HeropolisDa2ny]

The middle Spacer is used for a long width screen to have the configs aligned in the middle instead of having it aligned on the right side. This configuration might be coherent only when the screen width is big enough (for tablets).

This is the rendering with a width < 640 px (640 being the ~max width of a phone).

By removing the fix width of 80px it remove the overflow error

[hm21]

Perfect, this will fix that issue. The hardcoded 80px space was needed a long time ago as there was only one action button to center that button, but since we have a lot of action buttons it makes more sense to align everything as you do on the right side.