Changes beetroot from 0-2 to 1-2 xp to match berries
Adds glow berries and sweet berries (1-2 xp)
Fixes some bugs with xp orb generation
Adds cocoa beans (1-3 xp) and nether wart (1-4 xp)
Adds melon/pumpkin stem and beetroot
Rebalances xp amounts:
- 1-3 for wheat/potato/carrot/pumpkin & melon stem
- 0-2 for beetroot
Adds potatoes and carrots (same xp as wheat)
Adds 2-4 experience drop when harvesting full grown wheat
