updates sign up form layout template

Author: charlottebrf

_includes/header.html

@@ -8,7 +8,7 @@
       <a class="nav-link" href="gallery.html">Gallery</a>
     </li>
     <li class="nav-item">
-      <a class="nav-link" href="/">Sign up form</a>
+      <a class="nav-link" href="sign_up_form.html">Sign up form</a>
     </li>
   </ul>
 </nav>

_layouts/sign_up_form.html

@@ -7,9 +7,17 @@ <h1>Hack Brexit Mailing List</h1>
 
 <p>Sign up on our Hack Brexit contact form for us to keep you updated with all of the latest news </p>
 
-  <iframe src="https://docs.google.com/forms/d/e/1FAIpQLSftbQrHueHZpjbXyXhWKvR-uixs2J_BFhxJL29ZVp-v9vFoiQ/viewform?embedded=true" width="760" height="500" frameborder="0" marginheight="0" marginwidth="0">Loading...</iframe>
+<form accept-charset="UTF-8" action="https://docs.google.com/forms/d/e/1FAIpQLSftbQrHueHZpjbXyXhWKvR-uixs2J_BFhxJL29ZVp-v9vFoiQ/viewform" method="POST">
+  <input type="email" name="email" placeholder="Your Email">
+  <input type="text" name="name" placeholder="Your Name">
+  <input type="hidden" name="utf8" value="✓">
+  <button type="submit">Submit</button>
+</form>
+
+{% comment %}
+<iframe src="https://docs.google.com/forms/d/e/1FAIpQLSftbQrHueHZpjbXyXhWKvR-uixs2J_BFhxJL29ZVp-v9vFoiQ/viewform?embedded=true" width="760" height="500" frameborder="0" marginheight="0" marginwidth="0">Loading...</iframe>
+{% endcomment %}
 
-    {% endfor %}
 </div>
 {% include footer.html %}
 

sign_up_form.html

@@ -1,3 +1,3 @@
 ---
-layout: Sign up form
+layout: sign_up_form
 ---