[svn] Add user registration and user profiles.

Used modified versions of django-registration and django-profiles , both on bitbucket.

The Person model is now set up as the profile for auth.User s.

I set up a requestcontext so that settings is automatically passed to every template, no need to repeat ourselves in views. However, this needs to be refined: I will soon change it to only pass a subset of settings. E.G. we do not need to be passing the DB login and password!
Copied from http://cucc@cucc.survex.com/svn/trunk/expoweb/troggle/, rev. 8231 by aaron @ 1/29/2009 11:02 PM

templates/registration/login.html

@@ -0,0 +1,19 @@
+{% extends "base.html" %}
+
+{% block content %}
+
+{% if form.errors %}
+<p>Your username and password didn't match. Please try again.</p>
+{% endif %}
+
+<form method="post" action=".">
+<table>
+<tr><td>{{ form.username.label_tag }}</td><td>{{ form.username }}</td></tr>
+<tr><td>{{ form.password.label_tag }}</td><td>{{ form.password }}</td></tr>
+</table>
+
+<input type="submit" value="login" />
+<input type="hidden" name="next" value="{{ next }}" />
+</form>
+
+{% endblock %}