fix the undefined method content_tag #15245
not required include ActionView::Helpers::TagHelper in test as well
Deprecate implicit AD::Response splatting and Array conversion
Merge pull request #16822 from jeremy/deprecate-problematic-implicit-response-splatting

Deprecate implicit AD::Response splatting and Array conversion
Merge pull request #16824 from rajcybage/action_view_content_tag

fix the undefined method content_tag #15245
Dynamically modified schema and association would not be correctly reset

This fixes <"SQLite3::SQLException: no such column: legacy_things.person_id: SELECT \"legacy_things\".* FROM \"legacy_things\" WHERE \"legacy_things\".\"person_id\" = ?">
in OptimisticLockingTest#test_lock_destroy
Fix query with nested array in Active Record

`User.where(id: [[1,2],3])` was equal to `User.where(id:[1, 2, 3])`
in Rails 4.1.x but because of some refactoring in Arel this stopped
working in 4.2.0. This fixes it in Rails.

[Dan Olson & Cristian Bica]