increased performance of events/eventmanager

Eliminated event schema consistency checking.  It was computationally very expensive and provided little benefit (esp if we ever start tracking more resource/material changes).  Events can now have a maximum of 10 entries each (e.g. call addVal 10 times) to help performance - this can be increased if needed (with minor performance penalties).  The public interfaces to all classes have not changed.  Deleted now unnecessary schema checking tests.