'All users can create a new note.'

@api.multi
def _notification_recipients(self, message, groups):

    groups = super(Note, self)._notification_recipients(message, groups)
    new_action_id = self.env['ir.model.data'].xmlid_to_res_id('note.action_note_note')
    new_action = self._notification_link_helper('new', action_id=new_action_id)
    for (group, method, kwargs) in groups:
        if (group == 'user'):
            kwargs.setdefault('actions', []).append({'url': new_action, 'title': _('New    Note')})
    return groups
