Remove requirement that there must be at least one cell
Remove requirement that there must be at least one cell

daviddoria/PointGraphsPhase1,Wuteyan/VTK,johnkit/vtk-dev,candy7393/VTK,sgh/vtk,berendkleinhaneveld/VTK,spthaolt/VTK,ashray/VTK-EVM,daviddoria/PointGraphsPhase1,jeffbaumes/jeffbaumes-vtk,arnaudgelas/VTK,sumedhasingla/VTK,aashish24/VTK-old,aashish24/VTK-old,naucoin/VTKSlicerWidgets,demarle/VTK,sumedhasingla/VTK,demarle/VTK,Wuteyan/VTK,candy7393/VTK,keithroe/vtkoptix,ashray/VTK-EVM,sgh/vtk,hendradarwin/VTK,daviddoria/PointGraphsPhase1,Wuteyan/VTK,hendradarwin/VTK,johnkit/vtk-dev,collects/VTK,sankhesh/VTK,Wuteyan/VTK,candy7393/VTK,keithroe/vtkoptix,ashray/VTK-EVM,biddisco/VTK,arnaudgelas/VTK,cjh1/VTK,keithroe/vtkoptix,SimVascular/VTK,mspark93/VTK,jeffbaumes/jeffbaumes-vtk,berendkleinhaneveld/VTK,keithroe/vtkoptix,naucoin/VTKSlicerWidgets,johnkit/vtk-dev,hendradarwin/VTK,collects/VTK,demarle/VTK,sumedhasingla/VTK,ashray/VTK-EVM,msmolens/VTK,collects/VTK,cjh1/VTK,daviddoria/PointGraphsPhase1,sankhesh/VTK,demarle/VTK,gram526/VTK,sumedhasingla/VTK,cjh1/VTK,SimVascular/VTK,ashray/VTK-EVM,demarle/VTK,gram526/VTK,spthaolt/VTK,mspark93/VTK,demarle/VTK,demarle/VTK,sankhesh/VTK,collects/VTK,naucoin/VTKSlicerWidgets,spthaolt/VTK,candy7393/VTK,spthaolt/VTK,biddisco/VTK,hendradarwin/VTK,SimVascular/VTK,gram526/VTK,berendkleinhaneveld/VTK,SimVascular/VTK,sumedhasingla/VTK,msmolens/VTK,sgh/vtk,sumedhasingla/VTK,Wuteyan/VTK,johnkit/vtk-dev,mspark93/VTK,ashray/VTK-EVM,Wuteyan/VTK,spthaolt/VTK,sgh/vtk,msmolens/VTK,naucoin/VTKSlicerWidgets,mspark93/VTK,SimVascular/VTK,berendkleinhaneveld/VTK,mspark93/VTK,msmolens/VTK,hendradarwin/VTK,jmerkow/VTK,jeffbaumes/jeffbaumes-vtk,naucoin/VTKSlicerWidgets,biddisco/VTK,sumedhasingla/VTK,gram526/VTK,jmerkow/VTK,sumedhasingla/VTK,keithroe/vtkoptix,candy7393/VTK,sgh/vtk,mspark93/VTK,aashish24/VTK-old,berendkleinhaneveld/VTK,msmolens/VTK,biddisco/VTK,msmolens/VTK,keithroe/vtkoptix,collects/VTK,biddisco/VTK,sgh/vtk,aashish24/VTK-old,johnkit/vtk-dev,jmerkow/VTK,ashray/VTK-EVM,mspark93/VTK,biddisco/VTK,candy7393/VTK,Wuteyan/VTK,jmerkow/VTK,gram526/VTK,keithroe/vtkoptix,jmerkow/VTK,sankhesh/VTK,spthaolt/VTK,cjh1/VTK,gram526/VTK,sankhesh/VTK,arnaudgelas/VTK,hendradarwin/VTK,jeffbaumes/jeffbaumes-vtk,ashray/VTK-EVM,SimVascular/VTK,candy7393/VTK,msmolens/VTK,berendkleinhaneveld/VTK,johnkit/vtk-dev,SimVascular/VTK,sankhesh/VTK,SimVascular/VTK,arnaudgelas/VTK,candy7393/VTK,daviddoria/PointGraphsPhase1,biddisco/VTK,collects/VTK,demarle/VTK,cjh1/VTK,msmolens/VTK,hendradarwin/VTK,naucoin/VTKSlicerWidgets,mspark93/VTK,daviddoria/PointGraphsPhase1,johnkit/vtk-dev,gram526/VTK,arnaudgelas/VTK,arnaudgelas/VTK,aashish24/VTK-old,cjh1/VTK,gram526/VTK,jmerkow/VTK,jeffbaumes/jeffbaumes-vtk,jmerkow/VTK,keithroe/vtkoptix,berendkleinhaneveld/VTK,jmerkow/VTK,aashish24/VTK-old,sankhesh/VTK,spthaolt/VTK,jeffbaumes/jeffbaumes-vtk,sankhesh/VTK