update components

dashboard-ui/bower_components/jquery/test/data/if_modified_since.php

@@ -0,0 +1,20 @@
+<?php
+error_reporting(0);
+
+$ts = $_REQUEST['ts'];
+
+$ifModifiedSince = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? stripslashes($_SERVER['HTTP_IF_MODIFIED_SINCE']) : false;
+if ($ifModifiedSince == $ts) {
+	header('HTTP/1.0 304 Not Modified');
+	die; // stop processing
+}
+
+header("Last-Modified: " . $ts);
+
+if ( $ifModifiedSince ) {
+	echo "OK: " . $ts;
+} else {
+	echo "FAIL";
+}
+
+?>