contents.css not built into ckeditor.js

[Sergiy Kuzmenko]

Steps to reproduce

1. Download my custom build: ​http://ckeditor.com/builder/c21338e58b4ef94bfe0b9aff003760dd
2. Unzip and grep -r contents.css *
3. contents.css is not present in ckeditor.js

On the contrast if downloading a standard build ckeditor.js contains a like like this: CKEDITOR.config.contentsCss=CKEDITOR.getUrl("contents.css");

Expected result

Since my build includes Rich Combo and plugins which require contents.css it is expected to be part of the build. Without contents.css all plugins based on Rich Combo use browser default font style.