Add public account registration

cps/templates/layout.html

@@ -51,6 +51,9 @@
               <li><a href="{{url_for('logout', next=request.path)}}"><span class="glyphicon glyphicon-log-out"></span> Logout</a></li>
             {% else %}
               <li><a href="{{url_for('login', next=request.path)}}"><span class="glyphicon glyphicon-log-in"></span> Login</a></li>
+              {% if g.allow_registration %}
+              <li><a href="{{url_for('register')}}"><span class="glyphicon glyphicon-user"></span> Register</a></li>
+              {% endif %}
             {% endif %}
           </ul>
         </div><!--/.nav-collapse -->

cps/templates/register.html

@@ -0,0 +1,26 @@
+{% extends "layout.html" %}
+{% block body %}
+<div class="well col-sm-6 col-sm-offset-2">
+  <h2 style="margin-top: 0">Register a new account</h2>
+  <form method="POST" role="form">
+    <div class="form-group">
+      <label for="nickname">Username</label>
+      <input type="text" class="form-control" id="nickname" name="nickname" placeholder="Choose a username">
+    </div>
+    <div class="form-group">
+      <label for="password">Password</label>
+      <input type="password" class="form-control" id="password" name="password" placeholder="Choose a password">
+    </div>
+    <div class="form-group">
+      <label for="email">Email address</label>
+      <input type="email" class="form-control" id="email" name="email" placeholder="Your email address">
+    </div>
+    <button type="submit" class="btn btn-primary">Register</button>
+  </form>
+</div>
+  {% if error %}
+  <div class="col-sm-6 col-sm-offset-2">
+    <div class="alert alert-danger">{{error}}</div>
+  </div>
+  {% endif %}
+{% endblock %}