Update bulma version

app/server/templates/base.html

@@ -11,9 +11,7 @@
     <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.0.13/css/all.css" integrity="sha384-DNOHZ68U8hZfKXOrtjWvjxusGo9WQnrNx2sqG0tfsghAvtVlRW3tvkXWZh58N9jp"
         crossorigin="anonymous">
     <link href="https://fonts.googleapis.com/css?family=Open+Sans:300,400,700" rel="stylesheet">
-    <!-- Bulma Version 0.6.2-->
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bulma/0.6.2/css/bulma.min.css" integrity="sha256-2k1KVsNPRXxZOsXQ8aqcZ9GOOwmJTMoOB5o5Qp1d6/s="
-        crossorigin="anonymous" />
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bulma/0.7.1/css/bulma.min.css" crossorigin="anonymous" />
     <link rel="stylesheet" type="text/css" href="{% static 'css/forum.css' %}">
     <script src="https://cdn.jsdelivr.net/npm/vue@2.5.16/dist/vue.js"></script>
     <script src="https://unpkg.com/axios/dist/axios.min.js"></script>