core (common): improved flexibility of jid selector: - JidSelector can now display a custom set of jids, using the new `to_show` property, see comments for details. - a new "implicit_update" property can be set to False (it's True by default) to avoid the automatic "update" on instance initiation. If unset, use must call "update" explicitly.

[DEFAULT]
bridge = pb
log_level = debug
log_fmt = #[%%(levelname)s][%%(name)s] %%(message)s

[cagou]
no_certificate_validation = true
log_level = debug
log_fmt = [%%(levelname)s][%%(name)s] %%(message)s