Always show the management view of the reservation details page

[ondryaso]

When a board games manager opens their own reservation (by clicking a row on the Moje rezervace page), they are presented with the basic user view of the reservation details: they can only ask for prolongation and see the state (and possibly themselves as the contact person).

However, when they open the same reservation from the managers' list (Aktuální rezervace), they are presented with the management view when they can prolong or mark a game as handed back.

This makes no bloody sense, as the person is a manager so it's quite probable that they're going to manage their own reservations themselves. Managers should always be presented with the managers' view of a reservation to make the flow more natural.