Handle the protection of ArmorStand

Here is a PR to handle Armor Stand protection (both the armor stand and the ) in Worlduard 6 for Spigot 1.8.
I tested it and it seems to work fine.

(sorry for the length of the commit message I couldn't rename it to a smaller one, if anyone has an idea ? I try to amend it an push it again but it didn't seem to work)