EDIT

ref #7912 Fix selection states in checkbox viewer

ref #7912 Add toolbar to checkbox viewer + visualize selection state

ref #7849: do not save preferences if page was not edited

ref #7849: harmonize admin and local preferences for distribution editor and use drop down instead of radio buttons

Revert "Revert "ref #7849: move general db preferences to its own tab to avoid saving if not edited""

This reverts commit e78f3e6c944dd0630daef5ecfab96773a875c695.

code cleanup

Fix selection when creating new nodes

code cleaning

Use utility method to confirm deletion

ref #6806 Fix dirty state handling and saving in feature tree editor