Change-Id: I1a4c53ac6a4ee6c16d755e52742eb098b8221a8d

This commit rename the tarball, debian, ubuntu and fedora packages.

This commit also modify the debian post install script to add support
our repositories for Debian 10 and Ubuntu 18.10 and 19.04 and create
transition packages to ensure a proper nama transition in debian based
distributions.

Warning: when using reprepo to add the ring transition deb package
this get into pool/main/j/jami. for now we think is a reprepo error
because reads the Source: instead of Package: field.

Change-Id: I47449a79c1a8bfd6ee0f3ffed618886f1dc1645a

Change-Id: Ice5cba61bf3f7baa3d207ea269ffa4537378ae58

Change-Id: Iab011abd51859cdcfb30663fb8bd2fd44aa71bcd

Change-Id: Ie65d01f8b18ccf930244c1d8e4cd3ffc73de3c9a
Tuleap: #884