implement CTRL C safe interrupt

increase size of buffer

set nearly unlimited amount of events

introduce 100 ms delay

introduce event header into FairRunOnline

change sleep time from 100 to 10 milliseconds

store control histograms in a separate file with a given refresh rate

skip empty events using return value

comment out cout for each sub-event

remove doubled initialisation of parameter containers

skip check of branches if list is empty

added sub-detector LOS

return empty event value only if all unpackers failed

added decoding of event header using dedicated unpacker

merge with changes of Florian

ignore interrupt - safe exit