Does not retain choice to trust ssl/tls certificates for irc servers

[Rachel Greenham]

(This may actually be an Empathy problem, as I understand it's providing the backend)

If an IRC server allows for an SSL/TLS connection (eg: it's a ZNC proxy), but is using a self-signed certificate, Polari, correctly the first time, shows a dialog asking if I want to continue despite this. There is a checkbox where you can indicate that it should remember this choice for all future connections. Checking that checkbox has no effect. The *next* time you need to connect, it will ask you again, and forever more.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: polari 3.28.0-1
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Apr 25 17:40:27 2018
InstallationDate: Installed on 2018-04-19 (6 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180409)
SourcePackage: polari
UpgradeStatus: No upgrade log present (probably fresh install)