Fixes
#1080: “Open device settings” button not always enabled
#1241: DivaServer restarts spontaneously in rare cases
#1268: Small single frame videoblocks when using Observision encoder
#1270: Slow JPEG stream on latest Bosch firmware
#1283: Missing packets in JPEG/MPEG2 stream cause video display errors
#1291: No live video in Internet Explorer 11