Added beatify code to format css and html.
Added css formatting library.
Merge branch 'feature/beautify' into release/v1.1.0
Removed unnecessary option code.
Removed unnecessary serialized items and editor mode.
Removed unnecessary field.
Added a new HtmlPageEx control to look like a DialogForm but work like HtmlPage.
Fixed layout for Sitecore 6.x.
Added new package.
Merge branch 'release/v1.1.0'