it would be handy not to use a hardcoded icon path in qdacco.desktop

It would be useful to have not a hardcoded icon path in qdacco,
so it can be easy replaced by another icon-theme.

At the moment it uses the hardcoded Icon=/usr/share/qdacco/qdacco.png in qdacco.desktop

One solution is to place the qdacco.png after install at:
/usr/share/pixmaps/qdacco.png

and change the starter to:
Icon=qdacco