Make 'development mode' easier to use

Redirect from `/` to `/nexus/` so one doesn't need to remember to do that after starting `./manage.py runserver`.

Author: adamchainz

tests/testapp/test_api.py

@@ -331,7 +331,7 @@ def test2(request):
         response = test2(request)
         assert response.status_code, 302
         assert 'Location' in response
-        assert response['Location'] == '/'
+        assert response['Location'] == '/foo/'
 
     def test_global(self):
         switch = Switch.objects.create(key='test', status=DISABLED)

tests/urls.py

@@ -7,19 +7,18 @@
 import nexus
 from django.conf.urls import include, url
 from django.contrib import admin
+from django.http import HttpResponse
+from django.views.generic.base import RedirectView
 
 from gargoyle.compat import subinclude
 
 
-def foo(request):
-    from django.http import HttpResponse
-    return HttpResponse()
-
 admin.autodiscover()
 nexus.autodiscover()
 
 urlpatterns = [
     url(r'^nexus/', include(nexus.site.urls)),
     url(r'^admin/', subinclude(admin.site.urls)),
-    url(r'^$', foo, name='gargoyle_test_foo'),
+    url(r'^foo/$', lambda request: HttpResponse(), name='gargoyle_test_foo'),
+    url(r'^/?$', RedirectView.as_view(url='/nexus/', permanent=False)),
 ]