Updates for the netcode refactor. (#69)

* Updates for the netcode refactor.

* Change HandsGui to control.

Why? No idea but drawing of it works again.

* Fix hand change sync.

* Update submodule

Content.Client/UserInterface/HandsGui.cs

@@ -17,7 +17,7 @@ using SS14.Shared.Maths;
 
 namespace Content.Client.UserInterface
 {
-    public class HandsGui : HBoxContainer
+    public class HandsGui : Control
     {
         private static readonly Color _inactiveColor = new Color(90, 90, 90);
         private const int BOX_SPACING = 1;