Merged requested to merge more-paranoid-hlt-decoding into master
- prefer ServiceHandle
- prefer LHCb::Algorithm over Gaudi::Functional (and, as a consequence replaee Error with MsgCounter)
- throw error in case of overlapping keys between Hlt1 and Hlt2
- prefer Propertystd::array over Propertystd::vector with check that size is always 3...
- check for valid SourceID using an update handler instead in initialize