We're continuing to replace links with buttons, for the reasons
explained in commit 5311daadf.
Since we're using the admin action component, we can also simplify the
logic handling the confirmation message.
In order to avoid duplicate IDs when generating buttons to block the
same author more than once in a page, we're including the record dom_id
in the ID of the button to block an author.
JavaScript is used by about 98% of web users, so by testing without it
enabled, we're only testing that the application works for a very
reduced number of users.
We proceeded this way in the past because CONSUL started using Rails 4.2
and truncating the database between JavaScript tests with database
cleaner, which made these tests terribly slow.
When we upgraded to Rails 5.1 and introduced system tests, we started
using database transactions in JavaScript tests, making these tests much
faster. So now we can use JavaScript tests everywhere without critically
slowing down our test suite.