Use display_header_text() in custom-header.php. Rework the UI to be a 'Show...

Use display_header_text() in custom-header.php. Rework the UI to be a 'Show header text' checkbox (rather than radio buttons). Remove lame 'blank' hack for no-JS -- checkboxes work without JS. Move 'Select a Color' to a link like it is for custom background. Nearby code cleanup. see #18887.



git-svn-id: https://core.svn.wordpress.org/trunk@20241 1a063a9b-81f0-0310-95a4-ce76da25c4cd