This creates redirects for all moved pages, removes them from the
howto page, and deletes a couple of dead pages that were just
redirects.

It does *not* go through all internal links to fix them, but we do
take care of the service.md index as well.

howto.md

@@ -23,8 +23,6 @@ User access management:
 Machine management:
 
 * [incident-response](howto/incident-response)
-* [ganeti](howto/ganeti)
-* [grafana](howto/grafana)
 * [lvm](howto/lvm)
 * [nftables](howto/nftables)
 * [raid](howto/raid)
@@ -49,8 +47,6 @@ Other misc. documentation:
 * [iscsi](howto/iscsi)
 * [keyboard](howto/keyboard)
 * [lektor](howto/lektor)
-* [letsencrypt](howto/letsencrypt)
 * [openpgp](howto/openpgp)
-* [postgresql](howto/postgresql)
 * [quintex](howto/quintex)
 * [time](howto/time)