Do not resize the right control panel when resizing the left control panel.

Fixes #1274

Author: leMaik

chunky/src/res/se/llbit/chunky/ui/Chunky.fxml

@@ -67,7 +67,7 @@
             <Canvas fx:id="mapCanvas" />
             <Canvas fx:id="mapOverlay" />
           </StackPane>
-          <VBox maxWidth="500" minWidth="0" spacing="10.0">
+          <VBox maxWidth="500" minWidth="0" spacing="10.0" SplitPane.resizableWithParent="false">
             <padding>
               <Insets bottom="10.0" left="10.0" right="10.0" top="10.0"/>
             </padding>