Bug request - onFarmLandDamage event detects change of state of other blocks

[AntoD3v]

Describe the bug
The onFarmLandDamage event detects the change of state when stepping on a redstone mineral in an enemy claim.
They consider that you're breaking a crop when you're just stepping on redstone, and spam the player with a message.

To Reproduce
Steps to reproduce the behavior:

1. Player A claim zone and set redstone ore
2. Player B (not in Player A faction) walk on redstone ore

Expected behavior
The event should only be called for crops and not other block state changes such as redstone.

Screenshots
We see the messages in French and in the background, the redstone blocks.

./lang.yml: NOPERMISSION: '&6Faction &7▸ &cVous ne pouvez pas {action} dans la faction {faction}.'
./lang.yml: OTHER: '&6Faction &7▸ &cErreur: Vous ne pouvez pas faire ceci.'

Server Version (please complete the following information):

• Spigot Version: Paperspigot 1.8.8
• Factions Version: V4.0.1-RC
• Minecraft Version: 1.8.9 Lunar Client

Patch code
In com.massivecraft.factions.listeners.FactionsBlockListener.java (Tested and work !)
`
@eventhandler
public void onFarmLandDamage(EntityChangeBlockEvent event) {

   /* PATCH */
    if (event.getBlock().getType().equals(Material.REDSTONE_ORE)) return;
   /* END */

    if (event.getEntity() instanceof Player) {
        Player player = (Player) event.getEntity();
        if (!playerCanBuildDestroyBlock(player, event.getBlock().getLocation(), "destroy", true)) {
            FPlayer me = FPlayers.getInstance().getByPlayer(player);
            Faction otherFaction = Board.getInstance().getFactionAt(FLocation.wrap(event.getBlock().getLocation()));
            me.msg(TL.ACTION_DENIED_OTHER, otherFaction.getTag(), "trample crops");
            event.setCancelled(true);
        }
    }
}

`

Antoine