Initial connection of student module with cms.

* Enable account creation
* Some code cleanups
* Fix access to nonexistent fields in the account creation view
* Formatting fixes

cms/templates/activation_complete.html

@@ -0,0 +1,13 @@
+<%inherit file="marketing.html" />
+
+
+<%block name="content">
+
+<section class="tos">
+<div>
+  <h1>Activation Complete!</h1>
+  <p>Thanks for activating your account. You can log in at the <a href="/">home page</a>.</p>
+</div>
+</section>
+
+</%block>