Copyright and fix for test formatter

templates/test_formatter/test_formatter.html

@@ -1,5 +1,14 @@
 {% extends 'base.html' %}
-
+{% block media %}
+  <style>
+    .copyright {
+      position: absolute;
+      bottom: 48px;
+      left: 50%;
+      transform: translate(-50%, -50%);
+    }
+  </style>
+{% endblock %}
 {% block body %}
   <center>
     <form method="post" enctype="multipart/form-data">
@@ -7,5 +16,8 @@
       {{ form }}
       <button type="submit" style="margin-top: 2em">{{_('Upload')}}</button>
     </form>
+    <div class="copyright">
+      <p >{{_('Copyright')}} Nguyễn Tiến Trung Kiên</p>
+    </div>
   </center>
 {% endblock %}