fixed port issue

Change-Id: Ia65eded72a8fe297c25b74e32bd1956fe70b7cb4

jams-server/src/main/java/net/jami/jams/server/core/TomcatLauncher.java

@@ -104,7 +104,7 @@ public class TomcatLauncher {
             tomcat.start();
             //Try to pop-up Web-UI
             if (Desktop.isDesktopSupported() && Desktop.getDesktop().isSupported(Desktop.Action.BROWSE)) {
-                Desktop.getDesktop().browse(new URI(tomcat.getConnector().getScheme() + "://localhost:8080/templates/signup.html"));
+                Desktop.getDesktop().browse(new URI(tomcat.getConnector().getScheme() + "://localhost:" + tomcat.getService().findConnectors()[0].getPort() +"/templates/signup.html"));
             } else {
                 log.info("There is no graphical interface on this system - please connect remotely!");
             }