ref #8475 First (unstable) implementation of FeatureState details
ref #8238 Remove too specific generics from TermTree and TermNode
ref #6794 adapt TaxEditor to new term structure (rename FeatureNode and FeatureTree)
ref #8162 move FeatureTree and FeatureNode to new term package in TaxEditor
fix #8162 adapt terms to new package structure in TaxEditor
ref #6746 Add details view for feature tree and feature node