Few but major fixes

Remade the altar code so that any fish that lies within the altar or is stacked above will be properly accounted for.
Rewrote a lot of the logic handling fish, which should now finally prevent all cases of fish disappearing.
Adjusted how bait score is assigned when playing on days greater than 20. Bait score should now progress better and not leave you waiting for minutes to catch those 3000 pound fish.
Added logic to check for items that fall through the landscape, they will now be teleported back to the player.
Fixed a few bugs for the tutorial.
Other misc fixes.