add donkey double chest recipe to animal husbandry factory

Input 8 enderchest, 4 saddles, output 4 chests with "Donkey double chest" lore for the donkey plugin.

ALTERNATIVELY: create a command block on civtest with this input

    summon Item ~ ~ ~ {Item:{id:54, Count:1,tag:{display:{Lore:["Donkey double chest"]}}}}

which would be much easier if you just want to test the donkey plugin.