Actually print the port that was bound, instead of the one from the config (#644)

In the case of binding to port 0, this will print the actually bound port, instead of the `0` that's in the configuration file.

(cherry picked from commit d8a9c52)

Author: TechnicJelle

common/src/main/java/de/bluecolored/bluemap/common/web/http/Server.java

@@ -55,7 +55,7 @@ public void bind(SocketAddress address) throws IOException {
         this.server.add(server);
 
         if (checkIfBoundToAllInterfaces(address)) {
-            Logger.global.logInfo("WebServer bound to all network interfaces on port " + ((InetSocketAddress) address).getPort());
+            Logger.global.logInfo("WebServer bound to all network interfaces on port " + ((InetSocketAddress) server.getLocalAddress()).getPort());
         } else {
             Logger.global.logInfo("WebServer bound to: " + server.getLocalAddress());
         }