LobbyView now can change to RaceView upon race start packet received.

Added port number text field in start screen controller.
Created a client state.

#story[1055] #pair[hyi25, zyt10]

src/main/java/seng302/client/ClientState.java

@@ -0,0 +1,46 @@
+package seng302.client;
+
+import com.sun.org.apache.xpath.internal.operations.Bool;
+
+/**
+ * Created by zyt10 on 21/07/17.
+ */
+public class ClientState {
+
+    private static String hostIp = "";
+    private static Boolean isHost = false;
+    private static Boolean raceStarted = false;
+    private static Boolean connectedToHost = false;
+
+    public static String getHostIp() {
+        return hostIp;
+    }
+
+    public static void setHostIp(String hostIp) {
+        ClientState.hostIp = hostIp;
+    }
+
+    public static Boolean isHost() {
+        return isHost;
+    }
+
+    public static void setHost(Boolean isHost) {
+        ClientState.isHost = isHost;
+    }
+
+    public static Boolean isRaceStarted() {
+        return raceStarted;
+    }
+
+    public static void setRaceStarted(Boolean raceStarted) {
+        ClientState.raceStarted = raceStarted;
+    }
+
+    public static Boolean isConnectedToHost() {
+        return connectedToHost;
+    }
+
+    public static void setConnectedToHost(Boolean connectedToHost) {
+        ClientState.connectedToHost = connectedToHost;
+    }
+}