Replace Redirector extension with LibRedirect

Since Scribe launched, the Redirector extension config has needed
occasional attention. Using regular expressions to cover all edge cases
is difficult. After finding out that Scribe's current config can hang
websites, I decided that [LibRedirect] is likely a more robust
solution. It can rely on more than regular expressions, and is less
work to set up.

[LibRedirect]: https://libredirect.github.io/

CHANGELOG

@@ -1,3 +1,7 @@
+2022-09-24
+
+* Replace Redirector extension with LibRedirect
+
 2022-07-19
 
 * Fix downloadable config file for Redirector extension