local link messaging requires a restart
When gajim is started with avahi python binding, the checkbox "enable local link messaging" is greyed out.
However, if you install it without restarting gajim, this check box is no longer grayed, but link-local messaging do not work, as this requires a restart of gajim.
Could this be detected and either :
- enable local-link messaging to work
- do not ungrey the check box