Do not use worldgen executor for api profile completions

We cannot put blocking network I/O onto the worldgen threads,
this will crash the server if it stalls

patches/server/0147-Implement-getI18NDisplayName.patch

@@ -0,0 +1,32 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Wed, 4 May 2016 23:59:38 -0400
+Subject: [PATCH] Implement getI18NDisplayName
+
+Gets the Display name as seen in the Client.
+Currently the server only supports the English language. To override this,
+You must replace the language file embedded in the server jar.
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemFactory.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemFactory.java
+index 5f83838f3f40b778088187904b747abff703c3f2..f05923a6292f02a01791627abce2770daff24b6a 100644
+--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemFactory.java
++++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemFactory.java
+@@ -392,5 +392,18 @@ public final class CraftItemFactory implements ItemFactory {
+     public ItemStack ensureServerConversions(ItemStack item) {
+         return CraftItemStack.asCraftMirror(CraftItemStack.asNMSCopy(item));
+     }
++
++    @Override
++    public String getI18NDisplayName(ItemStack item) {
++        net.minecraft.world.item.ItemStack nms = null;
++        if (item instanceof CraftItemStack) {
++            nms = ((CraftItemStack) item).handle;
++        }
++        if (nms == null) {
++            nms = CraftItemStack.asNMSCopy(item);
++        }
++
++        return nms != null ? net.minecraft.locale.Language.getInstance().getOrDefault(nms.getItem().getDescriptionId(nms)) : null;
++    }
+     // Paper end
+ }