WebGLApplication: re-implement color connectors by axon and dendrite using Skeleton.splitByFlowCentrality.
WebGLApplication: re-implement color connectors by axon and dendrite using Skeleton.splitByFlowCentrality.

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