Set print_status_in_muc to none by default
According to #8385 (closed), print_status_in_muc
should be set to none
in the Python 3 version of Gajim. I am running the Python 3 version, but this was not the default setting. I think the usability of Gajim would improve quite a lot if these (sometimes quite spammy) messages are not showed to the user by default.