Bug#1055026: do not create web statistic for all language combinations

Package: www.debian.org


Currently we generate nearly 700 html files in /devel/website/stats
most of them not needed and each around 2.5M big so we have 1.6GB data
there.

The web logs show that only the file in the native language and the
engish version is accessed. There are also no link to the other translations.

For example combinations like de.fr.html, fr.de.html are not needed.
I wonder why these are generated and I guess we could save a lot of
building time in 4webwml.