[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

profiles/urls.py

@@ -0,0 +1,43 @@
+"""
+URLConf for Django user profile management.
+
+Recommended usage is to use a call to ``include()`` in your project's
+root URLConf to include this URLConf for any URL beginning with
+'/profiles/'.
+
+If the default behavior of the profile views is acceptable to you,
+simply use a line like this in your root URLConf to set up the default
+URLs for profiles::
+
+    (r'^profiles/', include('profiles.urls')),
+
+But if you'd like to customize the behavior (e.g., by passing extra
+arguments to the various views) or split up the URLs, feel free to set
+up your own URL patterns for these views instead. If you do, it's a
+good idea to keep the name ``profiles_profile_detail`` for the pattern
+which points to the ``profile_detail`` view, since several views use
+``reverse()`` with that name to generate a default post-submission
+redirect. If you don't use that name, remember to explicitly pass
+``success_url`` to those views.
+
+"""
+
+from django.conf.urls.defaults import *
+
+from profiles import views
+
+
+urlpatterns = patterns('',
+                       url(r'^create/$',
+                           views.create_profile,
+                           name='profiles_create_profile'),
+                       url(r'^edit/$',
+                           views.edit_profile,
+                           name='profiles_edit_profile'),
+                       url(r'^(?P<username>\w+)/$',
+                           views.profile_detail,
+                           name='profiles_profile_detail'),
+                       url(r'^$',
+                           views.profile_list,
+                           name='profiles_profile_list'),
+                       )