Enable removing of composite node when it is ghost. Enable ungrouping composite node when it is ghost.
Enable removing of composite node when it is ghost. Enable ungrouping composite node when it is ghost.

rdebroiz/dtk,d-tk/dtk,d-tk/dtk,d-tk/dtk,d-tk/dtk,d-tk/dtk,NicolasSchnitzler/dtk,rdebroiz/dtk,NicolasSchnitzler/dtk,d-tk/dtk,NicolasSchnitzler/dtk,rdebroiz/dtk,rdebroiz/dtk,NicolasSchnitzler/dtk