Added the component type Menu in the doc, to match with secondary menu items

Now distinguishes whether the Follow request has been accepted yet or not, and adapts the message displayed in the NotificationData.

Now distinguishes whether the Follow request has been accepted yet or not, and adapts the message displayed in the NotificationData.

Reformulate ('No notifications yet' is not appropriate if they are hidden because they are already read. 'No notification to show' is better')