Restructure documentation.
Restructure documentation.

Put all member functions into one of the doxygen sections. Split
sections so that they make more sense.
jperryhouts/dealii,lpolster/dealii,gpitton/dealii,gpitton/dealii,Arezou-gh/dealii,johntfoster/dealii,sairajat/dealii,danshapero/dealii,nicolacavallini/dealii,natashasharma/dealii,maieneuro/dealii,adamkosik/dealii,Arezou-gh/dealii,kalj/dealii,danshapero/dealii,flow123d/dealii,angelrca/dealii,jperryhouts/dealii,sairajat/dealii,mac-a/dealii,ibkim11/dealii,JaeryunYim/dealii,YongYang86/dealii,sriharisundar/dealii,maieneuro/dealii,gpitton/dealii,flow123d/dealii,EGP-CIG-REU/dealii,flow123d/dealii,nicolacavallini/dealii,JaeryunYim/dealii,natashasharma/dealii,andreamola/dealii,flow123d/dealii,danshapero/dealii,spco/dealii,spco/dealii,pesser/dealii,nicolacavallini/dealii,gpitton/dealii,EGP-CIG-REU/dealii,naliboff/dealii,rrgrove6/dealii,ibkim11/dealii,lue/dealii,Arezou-gh/dealii,jperryhouts/dealii,johntfoster/dealii,andreamola/dealii,EGP-CIG-REU/dealii,angelrca/dealii,natashasharma/dealii,natashasharma/dealii,sriharisundar/dealii,jperryhouts/dealii,maieneuro/dealii,lpolster/dealii,ESeNonFossiIo/dealii,spco/dealii,angelrca/dealii,spco/dealii,lue/dealii,sairajat/dealii,rrgrove6/dealii,angelrca/dealii,andreamola/dealii,spco/dealii,rrgrove6/dealii,JaeryunYim/dealii,JaeryunYim/dealii,natashasharma/dealii,jperryhouts/dealii,YongYang86/dealii,msteigemann/dealii,YongYang86/dealii,spco/dealii,JaeryunYim/dealii,shakirbsm/dealii,shakirbsm/dealii,sairajat/dealii,spco/dealii,JaeryunYim/dealii,naliboff/dealii,lpolster/dealii,angelrca/dealii,kalj/dealii,naliboff/dealii,mtezzele/dealii,johntfoster/dealii,mtezzele/dealii,pesser/dealii,sairajat/dealii,flow123d/dealii,nicolacavallini/dealii,flow123d/dealii,andreamola/dealii,YongYang86/dealii,jperryhouts/dealii,sriharisundar/dealii,ESeNonFossiIo/dealii,lpolster/dealii,mac-a/dealii,JaeryunYim/dealii,lpolster/dealii,ibkim11/dealii,kalj/dealii,ibkim11/dealii,ESeNonFossiIo/dealii,adamkosik/dealii,lpolster/dealii,kalj/dealii,andreamola/dealii,Arezou-gh/dealii,ESeNonFossiIo/dealii,lue/dealii,msteigemann/dealii,danshapero/dealii,gpitton/dealii,naliboff/dealii,naliboff/dealii,danshapero/dealii,sairajat/dealii,andreamola/dealii,kalj/dealii,ESeNonFossiIo/dealii,maieneuro/dealii,lue/dealii,mtezzele/dealii,flow123d/dealii,angelrca/dealii,mtezzele/dealii,YongYang86/dealii,sriharisundar/dealii,Arezou-gh/dealii,maieneuro/dealii,Arezou-gh/dealii,mac-a/dealii,adamkosik/dealii,shakirbsm/dealii,ESeNonFossiIo/dealii,adamkosik/dealii,lue/dealii,pesser/dealii,rrgrove6/dealii,msteigemann/dealii,mac-a/dealii,pesser/dealii,maieneuro/dealii,adamkosik/dealii,shakirbsm/dealii,mac-a/dealii,johntfoster/dealii,shakirbsm/dealii,adamkosik/dealii,sairajat/dealii,lpolster/dealii,ibkim11/dealii,nicolacavallini/dealii,mac-a/dealii,naliboff/dealii,mac-a/dealii,nicolacavallini/dealii,jperryhouts/dealii,EGP-CIG-REU/dealii,rrgrove6/dealii,johntfoster/dealii,EGP-CIG-REU/dealii,YongYang86/dealii,lue/dealii,angelrca/dealii,natashasharma/dealii,EGP-CIG-REU/dealii,mtezzele/dealii,EGP-CIG-REU/dealii,sriharisundar/dealii,nicolacavallini/dealii,adamkosik/dealii,Arezou-gh/dealii,pesser/dealii,pesser/dealii,johntfoster/dealii,gpitton/dealii,msteigemann/dealii,rrgrove6/dealii,mtezzele/dealii,msteigemann/dealii,ibkim11/dealii,andreamola/dealii,mtezzele/dealii,shakirbsm/dealii,pesser/dealii,sriharisundar/dealii,johntfoster/dealii,msteigemann/dealii,naliboff/dealii,ibkim11/dealii,danshapero/dealii,YongYang86/dealii,rrgrove6/dealii,maieneuro/dealii,lue/dealii,shakirbsm/dealii,kalj/dealii,danshapero/dealii,ESeNonFossiIo/dealii,kalj/dealii,gpitton/dealii,natashasharma/dealii,msteigemann/dealii,sriharisundar/dealii