title: Symfony Upgrade from 2.2 to 2.3 routing error
body: <p>I just started to upgrade my project from 2.2 to the newly released 2.3, and after a while I managed to get it work, but there is a little problem in dev environment.
  From the routing_dev.yml it reads only the first entry, and if the first is the profiler, for the route / it will found the profiler default route and don't go forward to read in the main route file, but if I change the order and the main router is the first, then the profiler doesn't apply so I don't have the debug toolbar.</p>
  
  <p>My routing_dev.yml:</p>
  
  <pre><code>    _main:
      resource: routing.yml
  
  _wdt:
      resource: "@WebProfilerBundle/Resources/config/routing/wdt.xml"
      prefix:   /_wdt
  
  _profiler:
      resource: "@WebProfilerBundle/Resources/config/routing/profiler.xml"
      prefix:   /_profiler
  </code></pre>
  
  <p>Config_dev.yml</p>
  
  <pre><code>imports:
      - { resource: config.yml }
  
  framework:
      router:
          resource: "%kernel.root_dir%/config/routing_dev.yml"
          strict_requirements: false
      profiler:
        only_exceptions: false
        enabled:         true
  
  web_profiler:
      toolbar: true
      intercept_redirects: false
  </code></pre>
  
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