Add hidden tags with CSRF field to forms

{{cookiecutter.repo_name}}/{{cookiecutter.repo_name}}/templates/_layouts/nav.html

@@ -30,6 +30,7 @@
       <li><a href="{{ url_for('register') }}">Create account</a></li>
     </ul>
     <form method="POST" class="navbar-form form-inline navbar-right" action="" role="login">
+      {{ form.hidden_tag() }}
       <div class="form-group">
         {{ form.username(placeholder="Username", class_="form-control") }}
         {{ form.password(placeholder="Password", class_="form-control") }}

{{cookiecutter.repo_name}}/{{cookiecutter.repo_name}}/templates/register.html

@@ -5,6 +5,7 @@
   <h1>Register</h1>
     <br/>
     <form class="form form-register" method="POST" action="" role="form">
+            {{ form.hidden_tag() }}
             <div class="form-group">
                 {{form.username.label}}
                 {{form.username(placeholder="Username", class_="form-control")}}