Width between icons is fixed

[phansson]

The width between the icons is fixed (width : 25px) and therefore doesn't scale width the "scale" of the theme.

Valo theme is able to do auto-scaling of everything (component sizes, icon sizes, margins, insets, etc) which all goes up or down with the chosen font size. I've become so used to this feature that I expect it to work for add-on widgets as well.

Solution: make the "25px" a SCSS variable which scales up or down with the scale of the theme. (don't know how to do that, if I did know this would be a pull request with source. :-))