We need to add the X-Ubuntu-Gettext-Domain=gwibber line inside /usr/share/applications/gwibber-preferences.desktop file, too, in order to get the System->Preferences->Broadcast Preferences menu entry translated.
We need to add the X-Ubuntu- Gettext- Domain= gwibber line inside /usr/share/ applications/ gwibber- preferences. desktop file, too, in order to get the System- >Preferences- >Broadcast Preferences menu entry translated.