Post Kinds/Styles/Types

[ryan]

Allow denoting a post as a certain style/type/kind. Some example styles are aside, gallery, link, quote. This will allow themes to style these posts according to kind.

This can be implemented as a custom taxonomy. wp_post_style, for example. Terms within wp_post_style would be the styles. Some core styles will be pre-populated. The slugs and names will be stored as English. Dummy gettext calls will get the strings into the catalog and later the fetched names can be run through translate().

UI on the edit post form will allow selecting from one of the terms in the wp_post_style taxonomy. Themes will be provided some simple API such as get_post_style() and has_post_style(). Themes can register support for particular styles with an add_theme_support() call. This can be used to limit the style selections in the UI to those that the theme supports.