Move quiet option to development.rb

This option is used in a initializer hook that runs before the
config/initializers files so it will not work if it is set there.

railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt

@@ -46,6 +46,9 @@ Rails.application.configure do
   # This option may cause significant delays in view rendering with a large
   # number of complex assets.
   config.assets.debug = true
+
+  # Suppress logger output for asset requests.
+  config.assets.quiet = true
   <%- end -%>
 
   # Raises error for missing translations

railties/lib/rails/generators/rails/app/templates/config/initializers/assets.rb.tt

@@ -9,6 +9,3 @@ Rails.application.config.assets.version = '1.0'
 # Precompile additional assets.
 # application.js, application.css, and all non-JS/CSS in app/assets folder are already added.
 # Rails.application.config.assets.precompile += %w( search.js )
-
-# Suppress logger output for asset requests.
-Rails.application.config.assets.quiet = true