ref #6806 remove buttons from FeatureTreeEditorComposite
ref #6805 Remove e3 drag and drop adapters
ref #6762 Fix session handling when creating new character
ref #6762 Disable editing feature tree label
ref #6762 Refactor shell access
ref #6762 Rename tree viewer
ref #6786 correctly set enable state of feature tree title text field
ref #6774 minor UI tweaks, shell handling and code refactoring
ref #6774 session handling and minor refactoring
ref #6774 Add "Export" button to FeatureTreeEditorComposite
ref #6762 Use FeatureTreeEditorComposite for all tree viewers
Implement session handling in CharacterEditor
Integrate FeatureTreeEditorComposite into CharacterEditor
Add session to CharacterEditor
Integrate FeatureTreeEditor into CharacterEditor