[pkg] Fix doc-base section As pointed by Lintian, the “Apps” section is only used in menu, not in doc-base. We can just remove it.

etc/init.d
etc/cubicweb.d
usr/bin
usr/share/doc/cubicweb-ctl
var/log/cubicweb
var/lib/cubicweb/backup
var/lib/cubicweb/instances