changelog entry for deprecated ActionController::Integration, ActionController::IntegrationTest, ActionController::PerformanceTest,ActionController::AbstractRequest, ActionController::Request, ActionController::AbstractResponse others

Closes #4441 if Active Record is disabled assets are delivered correctly

This reverts commit ae60475a.

Reason: Changelogs are not meant to be edited in docrails.

This reverts commit 2bc8e571.

Reason: Changelogs are not meant to be changed in docrails.

Added use_two_digit_numbers select_tag option for displaying months and days with leading zeros without affecting the values (useful for e.g. ISO-style dates, 2011-08-01).
Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Conflicts:

	actionpack/CHANGELOG.md

This support is near-identical to the existing submit_tag support.

Example:

    <%= form_for @post do |f| %>
      <%= f.button %>
    <% end %>

Make ActiveSupport::Benchmarkable a default module for ActionController::Base, so the #benchmark method is once again available in the controller context like it used to be *DHH*

Rails will now use your default layout (such as "layouts/application") when you specify a layout with `:only` and `:except` condition, and those conditions fail.

For example, consider this snippet:

    class CarsController
      layout 'single_car', :only => :show
    end

Rails will use 'layouts/single_car' when a request comes in `:show` action, and use 'layouts/application' (or 'layouts/cars', if exists) when a request comes in for any other actions.

Log 'Filter chain halted as CALLBACKNAME rendered or redirected' every time a before callback halts.