Notes can now be added to *any* model in the admin. Deletion is
immediate and irreversible.
The following permissions can be granted to users/groups:
- blender_notes.add_note
- blender_notes.change_note
- blender_notes.delete_note
- blender_notes.view_note
WARNING: a user with view_note permissions can view *ALL* notes. There
is no model-level access. In other words, even when someone cannot see
Memberships, they can read ALL notes on ALL Memberships.
Sybren A. Stüvel
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