Fix error in handling neurons without partners and with 100% reviewed partners.
Fix error in handling neurons without partners
and with 100% reviewed partners.

htem/CATMAID,htem/CATMAID,fzadow/CATMAID,fzadow/CATMAID,htem/CATMAID,fzadow/CATMAID,htem/CATMAID,fzadow/CATMAID