Django 1.8 alpha 1 support

* Test on Python 2.7, 3.4, pypy.
* Call super.setUpClass in DjrillAdminTests.
  https://docs.djangoproject.com/en/dev/releases/1.8/#overriding-setupclass-teardownclass-in-test-cases

Also clear up some new PendingDeprecationWarnings, where
the changes can easily remain compatible back to Django 1.3:

* Remove deprecated django.conf.urls.patterns.
  (And match Django recommendations in our docs.)
  https://docs.djangoproject.com/en/dev/releases/1.8/#django-conf-urls-patterns
* Remove deprecated SimpleTestCase.urls.
  (We've already back-ported @override_settings
  for testing older Django versions.)
  https://docs.djangoproject.com/en/dev/releases/1.8/#django-test-simpletestcase-urls

djrill/tests/admin_urls.py

@@ -1,16 +1,18 @@
 try:
-    from django.conf.urls import include, patterns, url
+    from django.conf.urls import include, url
 except ImportError:
     # Django 1.3
-    from django.conf.urls.defaults import include, patterns, url
+    from django.conf.urls.defaults import include, url
 
 from django.contrib import admin
 
 from djrill import DjrillAdminSite
 
+# Set up the DjrillAdminSite as suggested in the docs
+
 admin.site = DjrillAdminSite()
 admin.autodiscover()
 
-urlpatterns = patterns('',
+urlpatterns = [
     url(r'^admin/', include(admin.site.urls)),
-)
+]