Propagate test messages through assert_routing helper, Fixes #14908

assert_routing was not raising the message passed into the assertion
violation that it raised. This change propagates messages through
the on_fail error.

This fixes this error:
https://github.com/rails/rails/issues/14908

A test case for this issue is located here.
https://github.com/estsauver/test14908

To see that test case fail in the example app, just run
ruby -Itest test/controllers/guests_controller_test.rb
reset_column_infomation shouldn't be part of the assertion.
Preparing for 4.2.0.beta1 release
provide a builder for form labels to customize wrapping around I18n content
add I18n support for `:placeholder` HTML option is passed to form fields
just use the placeholder tag value if it is passed as a String
Cache the value of `changed_attributes` when calling `changes_applied`

`changes_applied` calles `changes`, which will call `changed_attributes`
multiple times in a loop. This method actually performs work now, so we
should cache the results while looping over it when we know it cannot
change.
Use system /tmp when testing actionpack

https://github.com/rails/rails/commit/c64bff2c87ebf363703c63ecd4a96d56a1a78364
added support and enabled parallel execution of the actionpack tests.

However it introduced https://github.com/rails/rails/commit/c64bff2c87ebf363703c63ecd4a96d56a1a78364
since one cannot connect to a socket file that's inside a Vagrant synced folder
due to security restrictions, and DRb tries to.

Also rename the temporary files to make it obvious that they're rails-related,
since now they're placed outside the project's directory.

Fixes https://github.com/rails/rails/commit/c64bff2c87ebf363703c63ecd4a96d56a1a78364
Update documentation to match change in #5942 [ci skip]
recount files quantity
[ci skip ]Document transform_values && transform_values!
[ci skip] document truncate_words
code quotes for classname
show stats for app/jobs
Describe web-console in the release notes [ci skip]

I put a more up-to-date description of Web Console in the release notes.
I'm not really happy with the language, so if you guys can help me with
that I'll be grateful :)
Merge pull request #16674 from gsamokovarov/describe-web-console

Describe web-console in the release notes
[ci skip] Added documentation for has_many extension parameter
Grammer and spelling pass on web console release note. [CI SKIP]
Follow-up to #16560

For the sake of backward-compatibility, we need to make #instance_of?
return true for Fixnum. On the other hand, the method should still
give true for ActiveSupport::Duration itself which was not the case
before.
Skip #eql? tests on Rubinius for AS::Duration

Since Rubinius is relying on #instance_of? for its definition of #eql?
(http://git.io/MtmbbA) but ActiveSupport::Duration should behave like
is_a? it returns true with `Fixnum`.

Thus, for the moment, the last assertion is failing so we have to skip
this test.