Gajim won't log a Single Message that was sent to a contact not in Roster
Bug description
Single Message that was sent to a contact not in Roster won't be logged.
Steps to reproduce
Send a Single Message to a contact that is not appearing in your Roster.
Software versions
OS version: Salix OS 13.37 (Slackware 13.37 based)
GTK version: 2.24.4
PyGTK version: 2.22.0