Updates to enable admin.

lib/urls.py

@@ -1,16 +1,14 @@
-from django.conf.urls.defaults import *
-
-# Uncomment the next two lines to enable the admin:
-# from django.contrib import admin
-# admin.autodiscover()
+from django.conf import settings
+from django.conf.urls import *
 
 urlpatterns = patterns('',
     # Example:
-    # (r'^acom/', include('acom.foo.urls')),
-
-    # Uncomment the admin/doc line below to enable admin documentation:
-    # (r'^admin/doc/', include('django.contrib.admindocs.urls')),
-
-    # Uncomment the next line to enable the admin:
-    # (r'^admin/', include(admin.site.urls)),
+    # (r'^foo/', include('lib.foo.urls')),
 )
+
+if 'django.contrib.admin' in settings.INSTALLED_APPS:
+    from django.contrib import admin
+    admin.autodiscover()
+    urlpatterns += patterns('',
+        url(r'^admin/', include(admin.site.urls)),
+    )