Add missing "map to this" in tree view for risk
Add missing "map to this" in tree view for risk

Update related objects descriptors for risk extension objects (risk & threat) to
show the + icon on right hand side in tree view.

AleksNeStu/ggrc-core,j0gurt/ggrc-core,kr41/ggrc-core,AleksNeStu/ggrc-core,plamut/ggrc-core,NejcZupec/ggrc-core,josthkko/ggrc-core,VinnieJohns/ggrc-core,edofic/ggrc-core,andrei-karalionak/ggrc-core,jmakov/ggrc-core,josthkko/ggrc-core,jmakov/ggrc-core,NejcZupec/ggrc-core,prasannav7/ggrc-core,plamut/ggrc-core,selahssea/ggrc-core,josthkko/ggrc-core,NejcZupec/ggrc-core,j0gurt/ggrc-core,jmakov/ggrc-core,NejcZupec/ggrc-core,selahssea/ggrc-core,selahssea/ggrc-core,plamut/ggrc-core,kr41/ggrc-core,VinnieJohns/ggrc-core,andrei-karalionak/ggrc-core,jmakov/ggrc-core,selahssea/ggrc-core,AleksNeStu/ggrc-core,VinnieJohns/ggrc-core,andrei-karalionak/ggrc-core,VinnieJohns/ggrc-core,prasannav7/ggrc-core,edofic/ggrc-core,prasannav7/ggrc-core,edofic/ggrc-core,plamut/ggrc-core,kr41/ggrc-core,j0gurt/ggrc-core,andrei-karalionak/ggrc-core,josthkko/ggrc-core,j0gurt/ggrc-core,kr41/ggrc-core,edofic/ggrc-core,prasannav7/ggrc-core,jmakov/ggrc-core,AleksNeStu/ggrc-core