"discard game in progress" question is now based on document dirty flag (closes #42)
"discard game in progress" question is now based on document dirty flag (closes #42)

herzbube/littlego,puremourning/littlego,herzbube/littlego,herzbube/littlego,herzbube/littlego,puremourning/littlego,puremourning/littlego,puremourning/littlego,herzbube/littlego