Broken gstreamer selection
In would-be-released Ubuntu 16.04 LTS when both 0.1 and 1.0 gst versions are present Gajim is unable to select gst version.
Removing 0.1-related packets makes it runnable, but audio/video remains broken.
OS version: Ubuntu 16.04
Gajim 0.16.10
A GTK+ Jabber/XMPP client
GTK+ Version: 3.19.12
PyGobject Version: 3.18.2
python-nbxmpp Version: 0.5.3