Add back _blank functionality removed recently

www/js/search.js

@@ -48,7 +48,15 @@ define(['jquery', 'analytics'], function ($, analytics) {
 		this._viewState = 0;
 		this._renderTo = cntSel;
 
-	};
+    $(function() {
+      $(cntSel).on('click', '.fn a', function() {
+        if (this.target !== '_blank') {
+          this.target = '_blank';
+        }
+      });
+    });
+
+  };
 	Directory.prototype._render = function(data) {
 		if (this._searchCanceled) {
 			return;