Dedupe trusted directories
A directory could appear multiple times in ~/.gdk.yml, which wasn't a
problem but was slightly inelegant. Make sure that the directories are
deduped before saving.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
A directory could appear multiple times in ~/.gdk.yml, which wasn't a
problem but was slightly inelegant. Make sure that the directories are
deduped before saving.