6a6915 Use language detection only if "whatever.png" gets requested

Authored and Committed by Christian Boltz 3 years ago
    Use language detection only if "whatever.png" gets requested
    
    ... but not if "whatever.xy.png" gets requested.
    
    This ensures that "whatever.xy.png" always gets delivered, even if it
    doesn't match the browser's Accept-Language header.
    
    Fixes https://progress.opensuse.org/issues/36213