csg-completion.bash: added csg_density
csg-completion.bash: added csg_density

junghans/csg,junghans/csg,MrTheodor/csg,votca/csg,votca/csg,junghans/csg,votca/csg,MrTheodor/csg,MrTheodor/csg,junghans/csg,junghans/csg,junghans/csg,votca/csg,MrTheodor/csg,MrTheodor/csg