Fix showing/hiding theme details and move code from theme-preview.js to theme.js. see #20403.

git-svn-id: http://svn.automattic.com/wordpress/trunk@20415 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/js/theme-preview.dev.js

@@ -53,11 +53,4 @@ jQuery(document).ready(function($) {
 
 		return false;
 	} );
-
-	// Theme details
-	$('#availablethemes').on('click', 'a.theme-detail', function (event) {
-		$(this).siblings('.themedetaildiv').toggle();
-		return false;
-	});
-
 });