git-subtree-dir: activestorage
git-subtree-mainline: 0d58e7e4
git-subtree-split: 3f4a7218

Merge pull request #30016 from albertoalmagro/set-ruby-version-in-gemfile-and-ruby-version-by-default

Set Ruby version in Gemfile and .ruby-version by default

* Microsoft Azure storage support

* Add support for Microsoft Azure Storage

* Comply with the new headers implementation

Avoid duplicate clauses when using #or

* Configure per-service request headers for direct uploads

* Fix header hashes

Fix test directory to correct path

Fix testing helpers that use Action View's capturing helpers (e.g. content_for)

[ Orhan Toy & Kasper Timm Hansen ]

Fix `warning: method redefined;`

Change http postgresql.org links to https [ci skip]

It seems that it accepts only HTTPS connections.
Ref: https://github.com/postgres/postgres/commit/7f77cbd996855a06fb742ea11adbe55c42b48fe2

Together, fix to the following lint violation.

```
rails/actionview/test/ujs/public/test/data-confirm.js
  303:11  error  Strings must use singlequote  quotes

rails/actionview/test/ujs/public/test/data-remote.js
  414:32  error  Extra semicolon  semi

✖ 2 problems (2 errors, 0 warnings)
```

Use frozen string literal in actionpack/

Then users don't have to bother with manually referring to internal routes.

Building `where_clause` in `UniquenessValidator` is no longer needed

Use `predicate_builder.build_bind_attribute` wherever possible

Rails 5.1 introduce an `ActiveSupport::Duration::Scalar` class as
a wrapper around a numeric value as a way of ensuring a duration
was the outcome of an expression. However the implementation was
missing support for modulo operations. This commit adds support
for those operations and should result in a duration being
returned from expressions involving them.

Fixes #29603 and #29743.

[ci skip] update routing guide

commit 4a3d295f3011e771cddead80de7497ca15d15c13
Author: Yauheni Dakuka <yauheni.dakuka@gmail.com>
Date:   Fri Jul 28 14:31:35 2017 +0300

    Update routing.md

commit 620a4ce47288e3ef6504290c78f931214968e7e3
Author: Yauheni Dakuka <yauheni.dakuka@gmail.com>
Date:   Fri Jul 28 14:19:29 2017 +0300

    [ci skip] update routing guide

[ci skip] update routing guide

For less duplicated code.

This fixes the following warning:

```
/tmp/d20170727-7039-kmdtb1/app/app/models/user.rb:5: warning: method redefined; discarding old model_name
rails/activemodel/lib/active_model/naming.rb:222: warning: previous definition of model_name was here
```

We were expecting those classes to be loaded when an association is
defined but they are not.

If you add a debugger on the first line of any of those classes and try
to define the corresponding association you will see that the classes
are not loaded.

Fixes #26273