Move assets to /app/assets/javascripts for Rails 4

I saw the following errors in the Javascript console after setting config.assets.prefix:

Failed to load: http://localhost:3000/assets/tinymce/plugins/table/plugin.js
tinymce.js?body=1 (line 4)
Failed to load: http://localhost:3000/assets/tinymce/plugins/image/plugin.js
tinymce.js?body=1 (line 4)
Failed to load: http://localhost:3000/assets/tinymce/plugins/link/plugin.js
tinymce.js?body=1 (line 4)
Failed to load: http://localhost:3000/assets/tinymce/plugins/fullscreen/plugin.js
tinymce.js?body=1 (line 4)
Failed to load: http://localhost:3000/assets/tinymce/themes/modern/theme.js

Moving the assets from /vendor/assets/javascripts to /app/assets/javascripts will load assets with a prefix.