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