Update DefaultController.php template files

I've changed the "@LightSamlSp/" to "LightSamlSpBundle::" for template rendering. This makes it possible to override a template with your own custom style. For example you can set up a SamlBundle with LightSamlSpBundle as parent and you can create "discovery.html.twig" with a template that matches your website. More info: http://symfony.com/doc/current/cookbook/bundles/inheritance.html

src/LightSaml/SpBundle/Controller/DefaultController.php

@@ -35,7 +35,7 @@ public function discoveryAction()
             return $this->redirectToRoute('lightsaml_sp.login', ['idp' => $parties[0]->getEntityID()]);
         }
 
-        return $this->render('@LightSamlSp/discovery.html.twig', [
+        return $this->render('LightSamlSpBundle::discovery.html.twig', [
             'parties' => $parties,
         ]);
     }
@@ -60,7 +60,7 @@ public function sessionsAction()
     {
         $ssoState = $this->get('lightsaml.container.build')->getStoreContainer()->getSsoStateStore()->get();
 
-        return $this->render('@LightSamlSp/sessions.html.twig', [
+        return $this->render('LightSamlSpBundle::sessions.html.twig', [
             'sessions' => $ssoState->getSsoSessions(),
         ]);
     }