Update nixpkgs -> update hugo to 0.152.2

That also requires a couple of changes in the template. For some of them I just remove the corresponding feature like analytics and comments.

themes/hermit/exampleSite/config.toml

@@ -10,8 +10,6 @@ pygmentsUseClasses  = true
 rssLimit = 10  # Maximum number of items in the RSS feed.
 copyright = "This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License." # This message is only used by the RSS template.
 enableEmoji = true  # Shorthand emojis in content files - https://gohugo.io/functions/emojify/
-# googleAnalytics = "UA-123-45"
-# disqusShortname = "yourdiscussshortname"
 
 [author]
   name = "John Doe"