Misc. improvements
------------------
-### automatic POT/PO update
-
-- Use the `change` hook instead of `needsbuild`?
-- Fix (apparently harmless) undefined values that pollute logs when
- saving a master page in the CGI
-
### page titles
Use nice page titles from meta plugin in links, as inline already
Which configuration settings are safe enough for websetup?
-### parentlinks
-
-When the wiki home page is translatable, the parentlinks plugin sets
-`./index.html` as its translations' single parent link. Ideally, the
-home page's translations should get no parent link at all, just like
-the version written in the master language.
-
### backlinks
If a given translatable `sourcepage.mdwn` links to \[[destpage]],