Upgrade to coffee-rails 4.1.0

speed up fixtures by not loading all their classes

ActiveJob: allow empty queue names

As discussed in #17195, Que uses blank queue names by default for
performance reasons. At the very least, ActiveJob should allow users to
choose "" as their queue name. This commit allows blank queue names, as
well as tests to make sure that nil queue names still use the default.

Invalid HTTP method will raise I18n::InvalidLocale if :en is not a valid locale.

Request#check_method would use to_sentence(locale: :en), which breaks when
I18n.available_locales does not include :en and
I18n.enforce_available_locales is true (default).

Inlined to_sentence functionality to solve this.

[ci skip] removing ruby-i18n.org/wiki link that is not available and usi...

[ci skip] removing ruby-i18n.org/wiki link that is not available and using “gems” instead of plugins

Don't pass retry option to Sidekiq

* This would override whatever default is configured in Sidekiq
  system-wide, and retry is true by default anyway.

update error message when InlineAdapter is used

Warning about middleware not auto-reloading

Add a section in the guide to explain that Rails can't auto-reload
a middleware on code change.

Fix #16806

[ci skip]

fix tests on action_mailer

Include appropriate helpers and use `assert_dom_equal` where applicable

remove un-needed sort

HTML doesn't care what order the elements are rendered in, so why should we?

Updates tests to use proper `assert_dom_equal` instead of `assert_equal` /cc @jeremy

Fix grammar [ci skip]

Rephrasing sentences

fix autoload tests

Change `gsub` to `tr` where possible

update queue_classic details [ci skip]

Fix typo in Active Model guide

- instrospection -> introspection.
- [ci skip]

Merge branch 'active-model-secure-password-guide' of https://github.com/aditya-kapoor/rails into aditya-kapoor-active-model-secure-password-guide

Conflicts:
	guides/source/active_model_basics.md

- Some grammatical errors and rewording of sentences throughout document

- Renaming headers to be more human readable, and if following paragraphs do not include module
  names, adding those in

- In ActiveModel::AttributeMethods
  * formatting expected output correctly, changing from `#` to `# =>`

- In ActiveModel::Dirty
  * changing expected output of person.first_name_was from "First Name" to nil
  * removing 'active_model' requirement at top of code snippet

- In ActiveModel::Validations
  * originally Person.new(token: "2b1f325") raises an argument error (1 for 0), so setting of
    attribute occurs on the line after object instantiation

- In ActiveModel::Naming
  * closing code snippet tag at end of section so ActiveModel::Model is a separate section

- In ActiveModel::Model
  * fixing spelling mistake of attr_accessor

- In ActiveModel::Serialization
  * adding edit to description of how from_json and from_xml works under serialization

- In ActiveModel::Lint::Tests
  * capitalizing person for class name

[ci skip] Clarify deletion strategies for collection proxies