#38 create project icons

[Darius Blaszyk]

Create project icons for MODELbuilder. An icon for on
the desktop and for the projectfiles.
The icons should preferrebly be in SVG format (use
inkscape for instance) so they can be scaled in
different sizes without any quality loss. SVG format is
also very usefull for modifying the icons. No need to
relcreate the bitmap, just change the appropriate shapes.