Fix client crash with cannot send chat message
Fix potion effects not being reset on death. Fixes
 BUKKIT-4515
Update to latest CraftBukkit and refresh all patch hashes - somehow InventoryClickEvent patch got applied twice.
Remove CraftHorse patch since it is now covered by upstream
Add additional case for EntityDismountEvent
Fix CONTRIBUTING.md removal patches not working.

Two number changes breaks a lot apparently.

Signed-off-by: Steven Downer <grinch@outlook.com>