When building the output files, the current REMI reconstruction code assumes daqLibrary=1.0 fields to be present. SQS recently tried to reconstruct runs from 2019, which were still lacking this fields and thus causing the notebook to throw an exception. This MR preserves the output format, but catches old files by supplying default values.
Also fixes a bug in edge trigger code (only used for old data) and fixes a potential exception in plotting code when there's no signal in the data, which a corresponding MR in EXtra-remi: https://git.xfel.eu/dataAnalysis/EXtra-remi/-/merge_requests/1
