Editing Team isn't allowed to see unpublished contributions

[plourenco]

When a user part of the editing team tries to access a contribution he's not part of, the following error will come up:
The contributions of this event have not been published yet.

Checking that specific controller RHContributionEditableBase, we call RHContributionDisplayBase which as:

if (not published and not self.event.can_manage(session.user)
                and not self.contrib.is_user_associated(session.user)):
    raise NotFound(_("The contributions of this event have not been published yet."))

can_manage doesn't include reviewing managers or paper editors. On the other hand, the editing team is also unable to see a contribution under RHContributionDisplayBase.