Debian material update

Meant to avoid unnecessary confusion concerning the Debian packaging
for Apophenia; the brought material is meant to ease long term maintenance.

Notice that the apophenia Debian package was initiated and is currently
maintained by Jerome BENOIT [1] on behalf of the Debian Science Team [2].

[1] https://qa.debian.org/developer.php?login=calculus@rezozer.net
[2] https://wiki.debian.org/DebianScience