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.
fixed z-index, text-alignment in the dropdown menu to left in new subscription modal, replaced click_link with page.find().click in subscription specs, removed href in subscription index
