Add a simple sitemap using django.contrib.sitemaps - there aren't a lot of pages to map so far so it's pretty basic ;)

lemoncurry/settings/base.py

@@ -60,6 +60,7 @@ INSTALLED_APPS = [
     'django.contrib.auth',
     'django.contrib.contenttypes',
     'django.contrib.sessions',
+    'django.contrib.sitemaps',
     'django.contrib.messages',
     'django.contrib.staticfiles',