Merge branch '3.4'

* 3.4:
  Show welcome message if no routing configuration could be found
  fix tests

Author: xabbuh

Resources/config/routing.xml

@@ -101,6 +101,8 @@
             <argument type="service" id="request_stack" />
             <argument type="service" id="router.request_context" on-invalid="ignore" />
             <argument type="service" id="logger" on-invalid="ignore" />
+            <argument>%kernel.project_dir%</argument>
+            <argument>%kernel.debug%</argument>
         </service>
     </services>
 </container>