We only want to render the account link and login items in the header.
And we want only render the Multitenancy and Administrators sections in
the admin sidebar.
We include the administrators management so it's possible to give
permissions to other users to manage tenants.
In order to restrict access to other sections by typing the URL or
following a link, we're only enabling the rest of the routes when we
aren't in the multitenancy management mode.
The `use_helpers` method was added in ViewComponent 3.8.0, and it's
included by default in all components since version 3.11.0.
Note we sometimes delegated the `can?` method to the controller instead
of the helpers, for no particularly reason. We're unifying that code as
well.
Since the change on commit cbbe188d6 we added a Poll.current.any?
condition to show the officing link on admin menu to officers.
That condition doesn't have much sense since Poll results only can be
added after a poll has ended, and there may be only one active poll.
We're trying to be consistent; in the past, we had the partials
"shared/admin_login_items", "layouts/notification_item" and
"devise/menu/login_items". Now we're moving all these partials to
components in the `Layout` namespace.
