Ignore Missing Recipes in RecipeBook to avoid data errors

This code was causing NPE's in saving player data, potentially related to reloads.

Spigot-API-Patches/0113-Make-shield-blocking-delay-configurable.patch

@@ -1,4 +1,4 @@
-From 26b6ff3f923bd7ff541cfc78312596986fdee0c1 Mon Sep 17 00:00:00 2001
+From a6ab787c5dd9cc0681087bfb35ae3b837dc4683a Mon Sep 17 00:00:00 2001
 From: BillyGalbreath <Blake.Galbreath@GMail.com>
 Date: Sat, 16 Jun 2018 01:17:39 -0500
 Subject: [PATCH] Make shield blocking delay configurable
@@ -29,5 +29,5 @@ index 42cf95e1..5921c952 100644
      // Paper end
  }
 -- 
-2.11.0
+2.17.1