We're improving the readability of the ones we're about to modify.
Using human texts makes tests easier to read and guarantees we're
testing from the user's point of view. For instance, if we write
`fill_in banner_target_url`, the test will pass even if the field has no
label associated to it. However, `fill_in "Link"` makes sure there's a
field with an associated label.
So tests won't fail when an institution changes the default organization
name.
The tests are also easier to understand now, since it's more obvious
where the "CONSUL" text is coming from.
We were repeating the same code over and over (with a few variants) to
setup tests which require an administrator. We can use a tag and
simplify the code.
