client/model/graph: some ugliness remains in commit_diff_ajax__topo because of need to add nodes before links
client/model/graph: some ugliness remains in commit_diff_ajax__topo because of need to add nodes before links

yuvadm/rhizi,tlevine/rhizi,shlomif/rhizi,cben/rhizi,cben/rhizi,tlevine/rhizi,ozFri/rhizi,cben/rhizi,ozFri/rhizi,ozFri/rhizi,Rhizi/rhizi,Rhizi/rhizi,tlevine/rhizi,tlevine/rhizi,Rhizi/rhizi,shlomif/rhizi,shlomif/rhizi,yuvadm/rhizi,yuvadm/rhizi,ozFri/rhizi,shlomif/rhizi,Rhizi/rhizi,yuvadm/rhizi,cben/rhizi