Remove static_vector usage in LHCb::RawEvent
Adds a test which demonstrates the crash reported in #114 (closed), when loading RawEvent from a DST, and fixes the problem. This is done by partially reverting !2027 (merged), which added boost::container::static_vector (I don't understand why using that class is a problem, but don't know how to investigate further).
Edited by Alex Pearce