Themes: Make the Theme Detail view div use more of the available viewport, Fix the Header and Footer in the viewport and only scroll the theme details, Prefix some more theme CSS classes. Props shaunandrews for the initial viewport patch. Fixes #25961, #26192


git-svn-id: https://develop.svn.wordpress.org/trunk@26519 602fd350-edb4-49c9-b593-d223f7449a82
Themes: Indent the HTML for proper indentation after r26519 added an extra div. See #25961, #26192


git-svn-id: https://develop.svn.wordpress.org/trunk@26520 602fd350-edb4-49c9-b593-d223f7449a82
Themes: Bail if the search term matches the currently rendered themes, Fixes the events being clobbered. Props jblz. Fixes #26347


git-svn-id: https://develop.svn.wordpress.org/trunk@26521 602fd350-edb4-49c9-b593-d223f7449a82
Themes: Remove some HTML from a new string and put it in the replacement value instead. See #25948


git-svn-id: https://develop.svn.wordpress.org/trunk@26522 602fd350-edb4-49c9-b593-d223f7449a82