Replace a double loop over cells and indices by a single loop and the use of cell->active_cell_index().
Replace a double loop over cells and indices by a single loop and the use of cell->active_cell_index().

kalj/dealii,lue/dealii,naliboff/dealii,maieneuro/dealii,ESeNonFossiIo/dealii,maieneuro/dealii,ibkim11/dealii,nicolacavallini/dealii,natashasharma/dealii,shakirbsm/dealii,lpolster/dealii,angelrca/dealii,sriharisundar/dealii,ESeNonFossiIo/dealii,Arezou-gh/dealii,angelrca/dealii,ibkim11/dealii,lpolster/dealii,jperryhouts/dealii,YongYang86/dealii,johntfoster/dealii,pesser/dealii,jperryhouts/dealii,YongYang86/dealii,pesser/dealii,lue/dealii,johntfoster/dealii,mtezzele/dealii,pesser/dealii,johntfoster/dealii,spco/dealii,angelrca/dealii,lpolster/dealii,danshapero/dealii,YongYang86/dealii,naliboff/dealii,danshapero/dealii,rrgrove6/dealii,msteigemann/dealii,JaeryunYim/dealii,mtezzele/dealii,naliboff/dealii,lpolster/dealii,EGP-CIG-REU/dealii,spco/dealii,sairajat/dealii,adamkosik/dealii,EGP-CIG-REU/dealii,mac-a/dealii,johntfoster/dealii,andreamola/dealii,kalj/dealii,mtezzele/dealii,mtezzele/dealii,maieneuro/dealii,andreamola/dealii,mtezzele/dealii,adamkosik/dealii,naliboff/dealii,nicolacavallini/dealii,nicolacavallini/dealii,mtezzele/dealii,adamkosik/dealii,spco/dealii,sairajat/dealii,gpitton/dealii,ESeNonFossiIo/dealii,angelrca/dealii,ESeNonFossiIo/dealii,jperryhouts/dealii,jperryhouts/dealii,gpitton/dealii,pesser/dealii,sriharisundar/dealii,johntfoster/dealii,gpitton/dealii,adamkosik/dealii,ibkim11/dealii,rrgrove6/dealii,pesser/dealii,lue/dealii,pesser/dealii,msteigemann/dealii,mac-a/dealii,rrgrove6/dealii,rrgrove6/dealii,natashasharma/dealii,ibkim11/dealii,gpitton/dealii,spco/dealii,Arezou-gh/dealii,EGP-CIG-REU/dealii,shakirbsm/dealii,ESeNonFossiIo/dealii,adamkosik/dealii,ibkim11/dealii,sriharisundar/dealii,natashasharma/dealii,danshapero/dealii,lue/dealii,mac-a/dealii,ibkim11/dealii,Arezou-gh/dealii,gpitton/dealii,nicolacavallini/dealii,mac-a/dealii,johntfoster/dealii,Arezou-gh/dealii,natashasharma/dealii,sriharisundar/dealii,EGP-CIG-REU/dealii,pesser/dealii,sriharisundar/dealii,Arezou-gh/dealii,danshapero/dealii,msteigemann/dealii,natashasharma/dealii,msteigemann/dealii,johntfoster/dealii,naliboff/dealii,msteigemann/dealii,lue/dealii,andreamola/dealii,gpitton/dealii,danshapero/dealii,JaeryunYim/dealii,andreamola/dealii,shakirbsm/dealii,YongYang86/dealii,mac-a/dealii,jperryhouts/dealii,andreamola/dealii,lpolster/dealii,sairajat/dealii,lue/dealii,kalj/dealii,EGP-CIG-REU/dealii,nicolacavallini/dealii,adamkosik/dealii,spco/dealii,natashasharma/dealii,shakirbsm/dealii,maieneuro/dealii,lpolster/dealii,mtezzele/dealii,sairajat/dealii,msteigemann/dealii,sriharisundar/dealii,kalj/dealii,kalj/dealii,YongYang86/dealii,sriharisundar/dealii,danshapero/dealii,spco/dealii,nicolacavallini/dealii,YongYang86/dealii,maieneuro/dealii,andreamola/dealii,Arezou-gh/dealii,EGP-CIG-REU/dealii,kalj/dealii,JaeryunYim/dealii,danshapero/dealii,mac-a/dealii,YongYang86/dealii,rrgrove6/dealii,andreamola/dealii,EGP-CIG-REU/dealii,naliboff/dealii,sairajat/dealii,shakirbsm/dealii,ESeNonFossiIo/dealii,maieneuro/dealii,sairajat/dealii,mac-a/dealii,ESeNonFossiIo/dealii,lpolster/dealii,natashasharma/dealii,gpitton/dealii,rrgrove6/dealii,rrgrove6/dealii,angelrca/dealii,adamkosik/dealii,JaeryunYim/dealii,jperryhouts/dealii,spco/dealii,shakirbsm/dealii,angelrca/dealii,Arezou-gh/dealii,msteigemann/dealii,ibkim11/dealii,angelrca/dealii,JaeryunYim/dealii,naliboff/dealii,jperryhouts/dealii,nicolacavallini/dealii,kalj/dealii,maieneuro/dealii,JaeryunYim/dealii,lue/dealii,JaeryunYim/dealii,shakirbsm/dealii,sairajat/dealii