[TwigBundle] added missing absolute URL in Twig exceptions

Author: fabpot

Resources/views/Exception/exception_full.html.twig

@@ -1,7 +1,7 @@
 {% extends 'TwigBundle::layout.html.twig' %}
 
 {% block head %}
-    <link href="{{ asset('bundles/framework/css/exception.css') }}" rel="stylesheet" type="text/css" media="all" />
+    <link href="{{ asset('bundles/framework/css/exception.css', absolute=true) }}" rel="stylesheet" type="text/css" media="all" />
 {% endblock %}
 
 {% block title %}