adding a clear_db method; also putting try/catch around getting collection stats
adding a clear_db method; also putting try/catch around getting collection stats


Former-commit-id: ee1e4fdac1125110c5620f488a57ee6857589eee
djtotten/workbench,SuperCowPowers/workbench,SuperCowPowers/workbench,djtotten/workbench,SuperCowPowers/workbench,djtotten/workbench