In some cases the number of users is counted with each /view/ guest request

When the DW was not run yet and the current user is guest, we check if the there is a user (as a criteria for a new install situation). Problem is that until the instance is accessed by an admin the DW is never run and we keep counting the number of user for any guest /view/ request.

Ideally, we should add a cached, and more optimized, helper in UserManager and use that in DistributionInitializerListener.