Fix SA-EWS2

The app SA-EWS2 was not running correctly and assertions failed. This
patch fixes the problems indicated by assertions:

• The partial function for TimeConfidence had a redundant domain range defined.
• The BodyCrossCombinator did not get the identifiers (i.e., warning scores), which need to be provided separately for each connected agent. The documentation comment of class CrossCombinator now mentions the relevant member function addIdentifiers.