Change default application.js included in new Rails app [ci skip]

Remove a redundant default_scope tests

Make Rails welcome page responsive

[ci skip] Fix `scaffold_controller` generator usage

some typos and rephrasing in system test guide [ci skip]

Document support for composite primary keys

Prevent making bind param if casted value is nil

Remove the redundant `test_find_all_with_join` in AR

SystemTesting::Driver can register capybara-webkit and poltergeist

drivers.

When using `driver_by` with capybara-webkit or poltergeist,
SystemTesting::Driver will register the driver while passing
`screen_size` and `options` parameteres.

`options` could contain any option supported by the underlying driver.

Remove the pathname dependency from bin/update and bin/setup

Replace an outdated mention of `jquery_ujs` with `rails-ujs`

Fix articles layout in guides by eliminating W3C validator warnings [ci skip]

Correct a has_many association test

Simplify `assert_no_match %r{colname.*limit:}` regex

In `test_schema_dump_includes_limit_constraint_for_integer_columns`,
unified `assert_match` and `assert_no_match` to simple regex.

Consolidate database specific JSON types to `Type::Json`

Fix `default_scoped` with defined `default_scope` on STI model

Should use `quote` for a string literal

Follow up of #29077.

Before:

```sql
SELECT sql FROM sqlite_master WHERE tbl_name NOT IN ("foo") ORDER BY tbl_name, type DESC, name
```

After:

```sql
SELECT sql FROM sqlite_master WHERE tbl_name NOT IN ('foo') ORDER BY tbl_name, type DESC, name
```

> If a keyword in double quotes (ex: "key" or "glob") is used in a
context where it cannot be resolved to an identifier but where a string
literal is allowed, then the token is understood to be a string literal
instead of an identifier.

http://www.sqlite.org/lang_keywords.html

We don't get any benefit from it at all.

Extract `NumericData` model for tests

Add missing `delegate :extending, to: :all`

This regression is caused by d1249c1a.

If STI model is defined `default_scope`, `base_rel` is not respected.
I fixed to merge `base_rel` in that case.

If casted value is nil, generated SQL should be `IS NULL`. But currently
it is generated as `= NULL`. To prevent this behavior, avoid making bind
param if casted value is nil.

Fixes #28945.

Remove a redundant test case of HABTM_associations_test

Docs: Fix output representation [ci skip]

The output of two string attributes is displayed differently in the docs. Standardize the output by always showing it as a comment.

Better spacing in environments/production.rb file