import gr.grnet.pithos.web.client.AddUserDialog;
import gr.grnet.pithos.web.client.Pithos;
-import gr.grnet.pithos.web.client.foldertree.Resource;
import gr.grnet.pithos.web.client.grouptree.Group;
-import gr.grnet.pithos.web.client.rest.PostRequest;
-import gr.grnet.pithos.web.client.rest.RestException;
-import com.google.gwt.core.client.GWT;
-import com.google.gwt.core.client.Scheduler;
-import com.google.gwt.http.client.Response;
-import com.google.gwt.http.client.URL;
import com.google.gwt.user.client.Command;
-import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.PopupPanel;
/**