Drop extra variable from test
Refactor of ::Rails module

1. Used ActiveSupport::Autoload to dry-up the autoload definitions.
2. Used ActiveSupport's delegate to dry up the application proxied
   attributes.
3. Did a little white space change on Rails.groups.
Fix typos in AR changelog [ci skip]
Warning removed for Minitest
Grammar nazi at work [ci skip]
Merge pull request #10924 from pjg/patch-1

Grammar fix [ci skip]
Merge pull request #10923 from arunagw/warning_removed_minitest

Warning removed for Minitest
Merge pull request #10922 from prathamesh-sonpatki/typos

Fix typos in AR changelog [ci skip]
Merge pull request #10919 from vipulnsward/cleanup_as_test

Drop extra variable from test
Use sprockets-rails 2.0.0
Merge pull request #10928 from jetthoughts/use_sprockets_rails_2_0_0

Use sprockets-rails 2.0.0
Merge pull request #10915 from gsamokovarov/railties-autoloads

Refactor of ::Rails module