<!DOCTYPE html>
<html>
<head>
  <title>Hello-world page</title>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link href='//fonts.googleapis.com/css?family=Open+Sans' rel='stylesheet' type='text/css'>
  <link href="${pageContext.request.contextPath}/webjars/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet">
  <script src="${pageContext.request.contextPath}/webjars/bootstrap/3.2.0/js/bootstrap.min.js"></script>
  <script src="${pageContext.request.c