Fixed Chainsaw references in About Inference screen.
Added cancel button to levels screen and fixed the level button unlocking.
Fixed Data binding warnings by changing kLevelSettings from type Array to ArrayCollection and using getItemAt() to access elements.

Since it is a wrapper around Array, ArrayCollection can be treated like either an Array or like a collection. Also added type Number to var mean in calculateSampleMean() to fix that warning too.
Beating a level now unlocks the next level.

Also fixed the earn player/bot point functions in the debug console to work with the new system.