Added McMMO anvil fix

- Now you cannot repair or use sf materials to repair other items
- Translation key mcmmo-repair should be added

src/main/java/io/github/thebusybiscuit/slimefun4/integrations/McMMOIntegration.java

@@ -2,6 +2,7 @@
 
 import javax.annotation.Nonnull;
 
+import com.gmail.nossr50.events.skills.repair.McMMOPlayerRepairCheckEvent;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
@@ -19,7 +20,7 @@
 
 /**
  * This handles all integrations with {@link mcMMO}.
- * 
+ *
  * @author TheBusyBiscuit
  *
  */
@@ -54,6 +55,18 @@ public void onItemSalvage(McMMOPlayerSalvageCheckEvent e) {
         }
     }
 
+    @EventHandler(ignoreCancelled = true)
+    public void onItemRepair(McMMOPlayerRepairCheckEvent e) {
+        ItemStack repaired = e.getRepairedObject();
+        ItemStack material = e.getRepairMaterial();
+
+        if (isSalvageable(repaired) && isSalvageable(material))
+            return;
+
+        e.setCancelled(true);
+        Slimefun.getLocalization().sendMessage(e.getPlayer(), "anvil.mcmmo-repair");
+    }
+
     @EventHandler(ignoreCancelled = true)
     public void onAutoDisenchant(AutoDisenchantEvent e) {
         try {
@@ -67,10 +80,10 @@ public void onAutoDisenchant(AutoDisenchantEvent e) {
      * This method checks if an {@link ItemStack} can be salvaged or not.
      * We basically don't want players to salvage any {@link SlimefunItem} unless
      * it is a {@link VanillaItem}.
-     * 
+     *
      * @param item
      *            The {@link ItemStack} to check
-     * 
+     *
      * @return Whether this item can be safely salvaged
      */
     private boolean isSalvageable(@Nonnull ItemStack item) {