public void showAdministrationPage(String managementId) {
switchView(new AdministrationPage(managementId), ViewManager.MAIN_NAVIGATION_MANAGE, ManagementMenuBar.ENTRY_ADMIN);
}
public void showCrystalBallPage() {
switchView(new CrystalBallPage(), ViewManager.MAIN_NAVIGATION_MANAGE, ManagementMenuBar.ENTRY_CRYSTALBALL);
}