Many-to-many DAO: Code clean up and implement find()
Many-to-many DAO: Code clean up and implement find()

This creates a copy of the 7-line FilteredDAO.select() implementation so that it can be referred to directly by find(). See comments in find() for rationale.

TanayParikh/foam2,foam-framework/foam2,foam-framework/foam2,TanayParikh/foam2,TanayParikh/foam2,foam-framework/foam2,TanayParikh/foam2,foam-framework/foam2,jacksonic/vjlofvhjfgm,jacksonic/vjlofvhjfgm,foam-framework/foam2,jacksonic/vjlofvhjfgm