librsvg has too many bugs to be used for build-time SVG extraction.
So I will just leave out my extraction script (for the time being) and
simply commit all extracted SVGs (with Inkscape through a script).
The gray inversion script works fine though, so no need to commit
Symbolic-inverted icons.
all *.xcf moved to folder xcf and it's according subdirectories
all new-painted icons are without shadow
most to small icons (<16x16) fixed
free-floating vectors in both wilbur icons tied to the icon
some new svg icons
color for channel r/g/b mor pleasant
Signed-off-by: klausstaedtler <staedtler-przyborski@web.de>