nominatim: add postgres/postgis version information in local settings
nominatim: enable file-based query log and log rotation
nominatim: have munin plugins use file-based query logs
set LANG for nominatim munin script to make python happy
Revert "set LANG for nominatim munin script to make python happy"

This reverts commit c7133b9e04d0d9246f13a661c3ddff5593f17059.
Remove powerdns cleanup code