Themes: Search the theme's slug too.

props matveb.
see #26730 for trunk.

Built from https://develop.svn.wordpress.org/trunk@26921


git-svn-id: http://core.svn.wordpress.org/trunk@26802 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/js/theme.js

@@ -146,7 +146,7 @@ themes.Collection = Backbone.Collection.extend({
 		// Find results
 		// _.filter and .test
 		results = this.filter( function( data ) {
-			haystack = _.union( data.get( 'name' ), data.get( 'description' ), data.get( 'author' ), data.get( 'tags' ) );
+			haystack = _.union( data.get( 'name' ), data.get( 'id' ), data.get( 'description' ), data.get( 'author' ), data.get( 'tags' ) );
 
 			if ( match.test( data.get( 'author' ) ) && term.length > 2 ) {
 				data.set( 'displayAuthor', true );