Deprecate #update_attributes in favor of `#update`.

ORMs that implement `Generators::ActiveModel#update_attributes` should change
to `#update`. Scaffold controller generators should change calls like:

    @orm_instance.update_attributes(...)

to:

    @orm_instance.update(...)

This goes along with the addition of `ActiveRecord::Base#update`,
introduced in cb2bd4aa.

When running tasks such "rake db:setup", instead of showing messages
like "db_development already exists", it was showing a big stack trace
and a message "Couldn't create database for ..." with the configuration
options, a very confusing message with a big trace.

This brings back the functionality present in 3-2, showing the same
message.

Fix regression introduced in pull 8812

See https://github.com/rails/rails/pull/8812#commitcomment-2416514

remove_possible_method -> remove_method

  Date#to_time and Date#xmlschema methods defined in Ruby 1.9.3

Introduced in 3bfd99de.
Related to #8840.

[ci skip]

Clearer conditional in constraint match check

Adding tests to cover untested methods in errors_tests.rb

Fixed nested fields bug when called with AssociationProxy

Correct source for in_clause_length for eager loading (Fix for #8474)

Fix json params parsing regression for non-object JSON content.

Fixes #8845.

Controller scaffold codestyle

Specified jbuilder version

Updating Array access docs more consistent

[ci skip]

Add asset pipeline guides section on implementing & registering own engines

Revert "Bump bundler dep to 1.3.0.pre.4+ to introduce 'bundle binstubs <gem>'"

This reverts commit e00b8ecf.

Revert "Use bundler --pre for travis builds"

This reverts commit 4d240ec2.

Include jbuilder by default and rely on its scaffold generator to show json API. The default scaffold will now just create HTML if the user actively opts out of jbuilder

Mention performance test extraction in 4.0 guide

Extract ActionDispatch::PerformanceTest

Evaluate view_cache_dependencies at the instance level

Conflicts:
	actionpack/lib/action_controller/caching.rb

Remove redundant double quotation marks [ci skip]