ref #6746 Add details view for feature tree and feature node

smaller changes for updating editor when changing taxon in misapplied name relationship

improve communication between editor parts when editing MAN

avoid potential widget is disposed exception

ref #7215: fix selection of type

ref #7215: add combobox for selecting misapplied name type

ref #7268 Implement own extension point for preferences

Conflicts:¶

eu.etaxonomy.taxeditor.workbench/fragment.e4xmi¶

ref #6925 Implement utility method to open links in external browser

Rename class to avoid duplicate class names

set titleCacheIsNotEmpty protected to be able to override this method