Use active_support/mini instead of active_support/minimalistic

activesupport/lib/active_support/minimalistic.rb

-$LOAD_PATH.unshift File.dirname(__FILE__)
-
-require "core_ext/blank"
-# whole object.rb pulls up rare used introspection extensions
-require "core_ext/object/metaclass"
-require 'core_ext/array'
-require 'core_ext/hash'
-require 'core_ext/module/attribute_accessors'
-require 'multibyte'
-require 'core_ext/string/multibyte'
-require 'core_ext/string/inflections'
-
-class String
-  include ActiveSupport::CoreExtensions::String::Multibyte
-end