I've just read more carefully your follow up:
The theming folder in /etc/ also needs to be moved a bit:
/etc/horde/themes-available.d/default ->
/etc/horde/themes-available.d/default/horde
OK, it was on purpose... but it seems it's not working, at least here.
I'm going to try to do some further tests and see if I'd missed
something with the cache... but once I "fixed" it as described in
previous post and refreshed the cache it started to work.
I find very unlikely that both the packaged directory structure and my
structure can both work, one has to be wrong.
--
Ivan Sergio Borgonovo
https://www.webthatworks.it https://www.borgonovo.net