/**
  * Controller function to add a project.
  * Function returns HTML or Redirect.
  * 
  * @TODO: Move to an own controller?
  * 
  * @return Mixed
  */
 public function addProject()
 {
     $view = new \view\ProjectView();
     if (strtolower($_SERVER['REQUEST_METHOD']) == 'post') {
         $project = $view->getProject();
         $project->setOwner($this->participantRepository->get($view->getOwnerUnique()));
         $this->projectRepository->add($project);
         \view\NavigationView::RedirectToUser($view->getOwnerUnique());
     } else {
         return $view->getForm($this->participantRepository->get(\view\NavigationView::getId()));
     }
 }