Remove unnecessary model requires

Remove outdated comments [ci skip]

generate mailer layout files if it does not already exist

These comments were added at dd257a3c
but outdated since #2086.

Add missing things to Rails 5.0 release notes [ci skip]

Provide the ability to override the queue adapter used by jobs under test

Fix typo

[ci skip]

test.

This PR adds a method called `queue_adapter_for_test` to
`ActiveJob::TestHelper`. This method is expected to provide the queue
adapter to be used for jobs under test. It maintains the current
behaviour by defaulting to an instance of
`ActiveJob::QueueAdapter::TestAdapter`. Tests that include
`ActiveJob::TestHelper` or extend from `ActiveJob::TestCase` can provide
a custom queue adapter by overriding `queue_adapter_for_test` in their
class.

- https://github.com/rails/rails/pull/18288.
- https://github.com/rails/rails/commit/da9038e.
- https://github.com/rails/rails/commit/78dab2a8569408658542e462a957ea5a35aa4679.
- https://github.com/rails/rails/pull/9065.
- https://github.com/rails/rails/pull/18314.
- https://github.com/rails/rails/pull/13434.

Fix `or` result SQL [ci skip]

Remove `_run_class_setup`

Should have been removed by 3073c531.

Add missing things to release notes [ci skip]

Add config.assets.quiet = true as default for generator

Broadcast #silence on ActiveSupport::Logger

Replace Kernel#caller by the faster Kernel#caller_locations

[ci skip] `define_model_callbacks` only exist in active model

- Also added a note when calling multiple time `define_callbacks`

Fix typo in ActionController::Renderer [ci skip]

Fix Typo in `SuckerPunchAdapter`

This code was added in 81286f85, but was
not used by that commit and does not appear to have ever been used.

* Restore the functionality of PR#14129, but do so with not nil to better indicate the purpose of the conditional

* Add a test when render_to_string called on ActionController::Base.new()

Allow Oracle bind parameter syntax `:a1` in test_join_conditions_added_to_join_clause

Fix typo

remove deprecated `:prefix` option  from doc [ci skip]

The option was deprecated in #21191.

existant => existent

[ci skip] Expand information on message options