Save Improvements

12 Save Slots. Separate QuickSave slot. F5, F9
Other bug fixes
+ Gates in Emerisk were moved up a layer to not interferece with rodents
+ You can no longer interact with doors while camping
+ No more cows in church when using Arcane Sight, but they will be missed
+ Made adjsutment to ItemSignal script in case it encounters any null objects
+ Typos
+ Added additional Save Slots
+ QuickSave and QuickLoad now use a special slot
+ Pickaxes that are fine, honed, exquisite and superior now properly show up as pickaxes