* on project close, unregister the tool * on stack close, focus on the window of the next%n-th   stack if there's any
* on project close, unregister the tool
* on stack close, focus on the window of the next%n-th
  stack if there's any

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