Display old name in log after renaming a neuron
Display old name in log after renaming a neuron

Closes #587.

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