Implemented a schema-level "count" function in the WW1Hash schema. Added countSetUsers and countProblemUsers to DB. Replaced SCALAR calls to listSetUsers with calls to countSetUsers. Update Schema documentation. The immediate advantage of this is to make ProblemSetList MUCH faster.
Changed paths:
trunk/webwork-modperl/lib/WeBWorK/ContentGenerator/Instructor/ProblemList.pm