Changed Deku Leaf mechanics and other stuff

- Throwing the boomerang counts as an attack for hunger
- Boomerang damage reduced
- Deku Leaf moved to tools tab
- Deku Leaf is no longer breakable
- Deku Leaf uses hunger rather than taking damage
- Deku Leaf now activates after falling only one block
- Cyclone can now also destroy webs
- Moved grass drops to HarvestDropsEvent so boomerangs, cyclones, etc.
can get special drops
- Removed unnecessary copying of retrieved grass drop