`path_names` can only be used for affecting `new` and `edit`

The methods, "post?", "put?", "head?", etc. contain an incorrect
explanation. They state that they are equivalent to request_method ==
:type, but this is not accurate because the methods convert the string
to a symbol. They are actually equivalent to:
  request_method_symbol == :type

There is not "a number" of up-to-date maintained plugins for dealing with foreign keys.

The foreign_key_migrations does not have any update since 2009 and is also about to be removed:

Extracted from http://www.harukizaemon.com/2009/09/plugins-grab-em-while-theyre-stale.html,
referenced in the plugin reference of the old guide version:

"And so it is that I will very shortly (within the next month) delete most of the plugins from
my GitHub account (harukizaemon)"

This reverts commit 2f428a62.

See comments here 2f428a62

mentioned about OS X and windows usually having a JS runtime

Rationale: this is more readable if serveral queries
are involved in one call. Also, it will be possible
to let AR log EXPLAINs automatically in production
mode, where queries are not even around.

beginning_of_week extended in both Time and Date so that to return week start based on start day that is monday by default

Updating newline fix to maintain existing linebreaks and indentation and...

middlewares should have configurable logger

This implements the ActiveModel::Serializer object. Includes code, tests, generators and guides.

From José and Yehuda with love.

Conflicts:
	railties/CHANGELOG.md

Added tests for #3751

make ActiveModel::Name fail gracefully with anonymous classes