Add error message for invalid user role import
Add error message for invalid user role import

AleksNeStu/ggrc-core,selahssea/ggrc-core,selahssea/ggrc-core,VinnieJohns/ggrc-core,AleksNeStu/ggrc-core,VinnieJohns/ggrc-core,VinnieJohns/ggrc-core,plamut/ggrc-core,AleksNeStu/ggrc-core,AleksNeStu/ggrc-core,plamut/ggrc-core,selahssea/ggrc-core,VinnieJohns/ggrc-core,selahssea/ggrc-core,plamut/ggrc-core,plamut/ggrc-core