Select number of matches rather than number of hands to create

[sievers2501]

Right now, you can specify the number of hands to generate. But maybe to get a good statistical analysis you want to have a certain number of hands match your analysis. Offer the option to enter the number of matching hands, not the number of hands rolled. Note that this feature should not be installed until we have a good cancel operator in place, because user may easily misestimate the time required to match a set auction.