private void DeleteProject(object sender, RoutedEventArgs e)
        {
            ProjectProxy proxy = ((MenuItem)sender).DataContext as ProjectProxy;

            string projectTitle = PromptDialog.Prompt("Type the name of this project (to be sure you delete the right project)", "Delete project");
            if (!string.IsNullOrWhiteSpace(projectTitle) && projectTitle.Equals(proxy.Title))
            {
                ProjectManager projManager = new ProjectManager();
                projManager.DeleteById(proxy.ID);

                this.UIProjectProxyList.Remove(proxy);
            }
        }