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.
Instead of knowing the input id generated by select2, we now rely on the
fact that the owner is in the fifth column. Both could change but this
is less code.
