Progress on #2, #5; oauth isn't working but not far off

Using the Noir session doesn't seem to be the right thing to do. I should be using the Ring session, but I'm having a hard time getting my head round it. @yogthos is too bloody clever!

resources/templates/login.html

@@ -1,12 +1,26 @@
 {% extends "base-unauthenticated.html" %}
 {% block content %}
-      <p>
-        We're not going to do login in the long term; we're going to use
-        <a href="https://oauth.net/2/">oauth</a>.
-        This is a temporary login form.
-      </p>
+      <div id="back-link-container">
+        <a href="javascript:history.back()" id="back-link">Back</a>
+      </div>
+      {% for authority in authorities %}
+      <div class="big-link-container">
+        <a href="auth?authority={{authority.id}}" class="big-link" id="{{authority.id}}-link">
+          <img src="img/authorities/{{authority.id}}.png" width="32" height="32" alt="{{authority.id}}"/>
+          {{authority.id}}
+        </a>
+      </div>
+      {% endfor %}
       <form action="auth" method="post">
         {% csrf-field %}
+        <h2>
+          Or use a test username and password
+        </h2>
+        <p>
+          We're not going to do login in the long term; we're going to use
+          <a href="https://oauth.net/2/">oauth</a>.
+          This is a temporary login form.
+        </p>
         <p class="widget">
           <label for="username">Username</label>
           <input type="text" id="username" name="username"/>