Set the focus to the 'username' field when the page is loaded.

fixes #235

static/css/login.css

@@ -13,6 +13,7 @@ input[type="password"] {
 }
 
 .form-actions { 
+    background-color: transparent;
     padding-right: 0px;
     padding-left: 0px;
 }

templates/registration/login.html

@@ -11,6 +11,11 @@
   <script type="text/javascript" src="{{ MEDIA_URL }}js/bootstrap.js"></script>
   {% url django.views.i18n.javascript_catalog as catalog_url %}
   <script type="text/javascript" src="{{ catalog_url }}"></script>
+  <script type="text/javascript">
+  $(document).ready(function() {
+      $('#id_username').focus();
+  });
+  </script>
 </head>
 
 <body>