Revert "Actually redirect to 20-20-20.html for real this time"

This reverts commit 03508e161b0884c96722f0c80947ea841dc37fc8.
Revert "Actually redirect to 20-20-20.html"

This reverts commit e68198419c162e2ae648ed18b06c73ab212b8dad.
Revert "Automatically redirect from index.html to 20-20-20.html"

This reverts commit 2e86f3b7c555f44d18e580abdde82361fc26abab.