Ckeditor 4 and Theme Changes

- Changed skin for ckeditor
- Fixed layout issues with the wysiwig
- Updated Files module with various style changes and fixes

Signed-off-by: Joshua Pekera <joshuapekera@me.com>
Merge branch '2.2/develop' into 2.2/nav_styles

Resolved conflict in system/cms/modules/pages/css/index.css (replaced mine with newer version)