bare is true.

We need to change this since coffee-rails loads ActionView that loads
core_ext/array/access.

This was added in Rails 4 and we don't need changelog entries to
behavior changes

[ci skip]

ActionController::Parameters#permit! is recursive

Sine page caching was remove from the core we don't have the
page_cache_directory anymore

Extract AP Page and Action caching from Rails

Updated comments for [ci skip]

- Changed the comments documentation for the update_column(s) methods to add a little bit of clarity

Move the CacheHelper#fragment_name_with_digest to be public

Count returns 0 without querying if parent is not saved

Patches `CollectionAssociation#count` to return 0 without querying
if the parent record is new. Consider the following code:

    class Account
      has_many :dossiers
    end

    class Dossier
      belongs_to :account
    end

    a = Account.new
    a.dossiers.build

    # before patch
    a.dossiers.count
    # SELECT COUNT(*) FROM "dossiers" WHERE "dossiers"."account_id" IS NULL
    # => 0

    # after
    a.dosiers.count # fires without sql query
    # => 0

Fixes #1856.

Thanks to @jeremy to teach me this one.

This reverts commit 4e9f53f9, reversing
changes made to 6b802cdb.

Revert "Don't use tap in this case."

This reverts commit 454d820b.

Reason: Is not a good idea to add options to this method since we can do
the same thing using method composition.

    Person.validators_on(:name).select { |v| v.kind == :presence }

Also it avoids to change the method again to add more options.

The use of tap in this case is very confusing since we are mutating the
return value inside the block

Make `.validators_on` accept `:kind` option

This will filter out the validators on a particular attribute based on
its kind.

Make Rails.public_path return a Pathname

Add ActiveSupport::KeyGenerator as a simple wrapper around PBKDF2

Fix reset_counters crashing on has_many :through associations.

The counter column name in the intermediate model need to be access
via the through reflection.

Fixes issue #5660: Failsafe exception returns text/html and text/plain.

It's best to just return text/plain when something has gone terribly
wrong.

Fixes #5660.

Optimize log subscribers to check if the log level is sufficient