Set language to en explicitly.

Suppress warning on newer sphinx.

Author: rouilj

website/www/conf.py

@@ -75,7 +75,7 @@
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
-#language = None
+language = 'en'
 
 # There are two options for replacing |today|: either, you set today to some
 # non-false value, then it is used: