implement login and logout

- add LogoutView to dashboard app
- define logout URL pattern
- only use login view from django.contrib.auth.views instead of including all
  auth URLs
- change base template to support login/logout
- add template dashboard/user_dashboard.html

gnuviechadmin/gnuviechadmin/urls.py

@@ -5,15 +5,13 @@ from django.conf import settings
 
 import dashboard.urls
 
-from django.contrib.auth import urls as auth_urls
-
 from django.contrib import admin
 admin.autodiscover()
 
 urlpatterns = patterns(
     '',
     url(r'', include(dashboard.urls)),
-    url(r'^auth/', include(auth_urls)),
+    url(r'^accounts/login/$', 'django.contrib.auth.views.login', name='login'),
     url(r'^admin/', include(admin.site.urls)),
 )