French translation courtesy of Edouard Biton.

We can assume the user's PC is safe, otherwise encryption won't help
anyway as the key could be stolen. If the user is too paranoid, he can
still disable it and thus also force the other end to stop logging.

detect sound player on first start as soon as gajim is started, not first time we open preferences window. Fixes #3566

don't request jabber:iq:last and jabber:iq:version to real jid in a (semi) anonymous room, even if we're moderator and we know the real JID. Fixes #3454

Quick fix: What does not exist cannot support anything. Fixes #4031.
Fix variable referencing. Fixes #4076.

We don't match all valid URIs like blub:blaa but include common used (non)-urls like www.google.de

* Coding standards
* remove useless key-list creation

Make nick completion sorted  case-insensitive. Fixes #4063. (was already IMO)
Restore #2975 way. Last nick that highlighted us are first. Fixes #2975.

Remove some usage of has_key() in the contacts module. It is a bit slower (method overhead) and will be deprecated soon.
In roster_window. make a small if-clause more pythonic.

Correctly count metacontacts in non merged accounts mode if we have metacontacts over several accounts.

Remove timing information for roster drawing.