add_engine_view_paths

# File railties/lib/rails/plugin/loader.rb, line 98
        def add_engine_view_paths
          # reverse it such that the last engine can overwrite view paths from the first, like with routes
          paths = ActionView::PathSet.new(engines.collect(&:view_path).reverse)
          ActionController::Base.view_paths.concat(paths)
          ActionMailer::Base.view_paths.concat(paths) if configuration.frameworks.include?(:action_mailer)
        end