fix 404 loading content located in sections #370

Add to Tree::getParent() $status array as third argument and call it from FrontendController::content().
To consistency add $status to BeTreeComponent::getParents() and FrontendController::getParentsObject()

cherry pick a4607eafdf868feab48b689a708c1ed2e1adf853

Conflicts:
	bedita-app/controllers/frontend_controller.php
	bedita-app/models/tree.php