Fixes #729 - "External storage attached to a Storage Drawers drawer controller ignores "extract only" setting"

src/main/java/com/raoulvdberge/refinedstorage/tile/externalstorage/StorageItemDrawerGroup.java

@@ -1,6 +1,7 @@
 package com.raoulvdberge.refinedstorage.tile.externalstorage;
 
 import com.jaquadro.minecraft.storagedrawers.api.storage.IDrawerGroup;
+import com.raoulvdberge.refinedstorage.api.storage.AccessType;
 import net.minecraft.item.ItemStack;
 import net.minecraft.util.NonNullList;
 
@@ -109,4 +110,9 @@ public class StorageItemDrawerGroup extends StorageItemExternal {
 
         return result;
     }
+
+    @Override
+    public AccessType getAccessType() {
+        return externalStorage.getAccessType();
+    }
 }