Set lobby anchor pane to invisible to allow races to start

racevisionGame/src/main/resources/visualiser/scenes/hostlobby.fxml

@@ -14,7 +14,7 @@
 <?import javafx.scene.layout.RowConstraints?>
 <?import javafx.scene.text.Font?>
 
-<AnchorPane fx:id="hostWrapper" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="600.0" prefWidth="780.0" xmlns="http://javafx.com/javafx/8.0.111" xmlns:fx="http://javafx.com/fxml/1" fx:controller="visualiser.Controllers.HostController">
+<AnchorPane fx:id="hostWrapper" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="600.0" prefWidth="780.0" visible="false" xmlns="http://javafx.com/javafx/8.0.111" xmlns:fx="http://javafx.com/fxml/1" fx:controller="visualiser.Controllers.HostController">
    <children>
       <SplitPane fx:id="splitPane" dividerPositions="0.7724935732647815" layoutX="580.0" layoutY="129.0" prefHeight="160.0" prefWidth="200.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
         <items>