The `login_as_admin_and_visit` helper was used a lot but isn't really
shorter than:
login_as_admin
visit path_visit
Calling those methods separately reduces line length. It also removes
the potential impression that it may be more efficient to use the
helper. Now we have less indirection if one of the calls fails and see
the failing spec line straight away.
Zones were intended to be sorted by name. But I guess that the syntax of
Ransack changed one day and we didn't notice because the spec was
creating entries in the right order already (which often reflects the
query result order without parameters). So the spec is fixed to fail if
the sorting doesn't happen and Ransack is configured to sort correctly.
The previous sort value was ignored.
