Survival Rebalanced

This is a real patch, despite the publish date

• Changed several structures' loot tables to contain more/less Iron
  • Less Iron: Buried Treasure, Jungle Temple, Shipwreck treasure
  • More Iron: Abandoned Mineshaft
• All Iron tools/weapons now use the vanilla recipe, no more 10-ingots-for-a-sword
• Changed Ancient City regular chest loot table to contain less Enchanted Golden Apples
• Added starving on Easy/Normal difficulties to Hunger system changes
• Fixed Hunger system changes' Mining Fatigue not being applied when below 5 hunger
• Added Slowness 1 at 0 hunger to Hunger system changes