Update redirects

Author: dbader

docs/_extra/_redirects

@@ -2,16 +2,15 @@
 # Docs: https://www.netlify.com/docs/redirects/
 
 # Redirect http to https (avoid one extra hop with an explicit rule for /en/latest/)
-http://docs.python-guide.org/en/latest/*        https://docs.python-guide.org/:splat       302!
-http://docs.python-guide.org/*                  https://docs.python-guide.org/:splat       302!
+http://docs.python-guide.org/en/latest/*        https://docs.python-guide.org/:splat       301!
+http://docs.python-guide.org/*                  https://docs.python-guide.org/:splat       301!
 
 # Redirect RTD prefix to /
-/en/latest/*                                    /:splat                                    302!
-
-# TODO: Make those cacheable 301s when we're done
-# TODO: Redirect Netlify URL to python-guide.org
-# https://python-guide.netlify.com/*              https://docs.python-guide.org/:splat       302!
+/en/latest/*                                    /:splat                                    301!
 
 # Redirect domain aliases to primary domain
-http://python-guide.org/* http://docs.python-guide.org/:splat 302!
-https://python-guide.org/* https://docs.python-guide.org/:splat 302!
+http://python-guide.org/*                       http://docs.python-guide.org/:splat        301!
+https://python-guide.org/*                      https://docs.python-guide.org/:splat       301!
+
+# Redirect Netlify version to primary domain
+https://python-guide.netlify.com/*              https://docs.python-guide.org/:splat       301!