First balancing changes

Made some basic changes for a first wave of rebalancing:

• Casino now activates at the save interal (once every 10 seconds), in order to better match its intended purpose as an idle income.
• All dungeons now have 1/4 the length - wll not effect encounter scaling. (If you were previously on a floor above 25, your progress will be reset to 1.)
• Favour effect significantly improved.