Fixed bug where External Storage doesn't detect new inventory when rotating.

src/main/java/com/raoulvdberge/refinedstorage/apiimpl/network/node/NetworkNodeExternalStorage.java

@@ -96,6 +96,15 @@ public class NetworkNodeExternalStorage extends NetworkNode implements IStorageP
         }
     }
 
+    @Override
+    protected void onDirectionChanged() {
+        super.onDirectionChanged();
+
+        if (network != null) {
+            updateStorage(network);
+        }
+    }
+
     @Override
     public String getId() {
         return ID;