Allow joining skeleton if it exists under Fragments or Isolated synaptic terminals
Allow joining skeleton if it exists under Fragments or Isolated synaptic terminals

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