Revert "Merge pull request #12990 from vipulnsward/remove_visualizer_param"

This reverts commit 5a19346d2855ecb1c791cdef3af92589566d00db, reversing
changes made to d82588ee4756b03025813b3997f4db171ee0fcdc.

This argument is being used in the view
https://github.com/rails/rails/blob/5a19346d2855ecb1c791cdef3af92589566d00db/actionpack/lib/action_dispatch/journey/visualizer/index.html.erb#L4

It is being set using the binding
https://github.com/rails/rails/blob/5a19346d2855ecb1c791cdef3af92589566d00db/actionpack/lib/action_dispatch/journey/gtg/transition_table.rb#L108
Build fix for Routing Inspector

Broken by

6701b4cf41f6f3d9cfc6a93715acbf852d1e468e
Merge pull request #12992 from arunagw/build-fix-routing-inspector

Build fix for Routing Inspector
Fix for titles of info pages

Both `rails/info/properties` and `rails/info/routes` have same html
title attribute as *Routes*. This commit includes a fix for the titles.
Merge pull request #12994 from sbagdat/fix_for_info_title

Fix for titles of info pages
Remove turbolinks when generating a new application based on a template
that skips it.

It can be skipped adding `add_gem_entry_filter { |gem| gem.name != "turbolinks" }` to the template.
Merge pull request #12993 from laurocaetano/skip_turbolinks

Option to skip turbolinks
Added a missing close parenthesis to i18n.md
Merge pull request #12996 from shreve/patch-2

Added a missing close parenthesis to i18n.md
Build fix for new routing inspector changes

Broken by

6701b4cf41f6f3d9cfc6a93715acbf852d1e468e
Merge pull request #13000 from arunagw/build-fix-rake-test

Build fix for new routing inspector changes
Improve changelogs

Also make Action Mailer changelog format more consistent with the
others [ci skip]
Fix the assertion for not inclusion of turbolinks on application.js.

We were asserting if `//= turbolinks` was not present while the correct is
asserting that `//= require turbolinks` is not present.
Merge pull request #13003 from laurocaetano/fix_assertion_for_turbolinks

Fix the assertion for not inclusion of turbolinks on application.js.
Use a more generic assertion to make sure this tests will be useful.

Since we are using assert_no_match, if we change the code before
changing the tests, the tests will still pass and the assertion will
become useless
Fix validation on uniqueness of empty association
When Array#as_json and Hash#as_json are called without options, they
should also call #as_json on the children without options (instead of
nil)
Merge pull request #12774 from exAspArk/fix_uniqueness_on_relation

Fix validation on uniqueness
Merge pull request #13007 from chancancode/dont_call_as_json_with_nil

Don't call #as_json on children of Array and Hash with nil when no arguments are passed
Cleaned up app generator test