[GFX] Saros logo as SVG file

Change-Id: Ibfa9334bf2911520bc7ed6f7cbfc9c1ae5975d1c
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/1989
Reviewed-by: Franz Zieris <zieris@inf.fu-berlin.de>
Tested-by: Franz Zieris <zieris@inf.fu-berlin.de>