Fix syntax error in Unity Launcher

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>
Disable collapsible toolbar for now

It looks awkward in Unity :-(

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>
Disable GStreamer plugin helper

It is shown too often and quite annoying.

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>