Set all values that are changed compared to the initial
set of values right after loading a new component.
This also includes a small change to the printerdemo,
so that it exposes more data to the business logic,
so that we have something to demonstrate;-)
Previously, the dark mode button was especially hard to hit on
embedded devices.
The TouchArea of the SideBarIcon used for this button was much smaller
than the others. By exposing a new property on the SideBarIcon:
icon-colorize, we can customize the colorize behaviour of the Image,
as well as the source. This allows us to re-use the internal Image for
the dark mode button. This allows us to use the default width, height
and x position of the icon. The touch areas of the sidebar buttons are
now uniform.
Workaround for #6715
In the wasm interpreted, we use an `<img>` tag to load images, but that
cannot get the default svg size without an explicit width and height
(For me this was also reproducible on desktop, but oddly not for
Olivier)
Letters like é were stripped from the noto sans font used by the demo,
and with FemtoVG we assume that presense of a character in the common
script implies full coverage (to avoid having to check every character).
Fix this by fixing the font itself. We wouldn't want those letters to
come from DejaVu :)
